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2024-12-20 2024-12-20 0001021882 scottsdale:S000030006Member scottsdale:C000092021Member 2024-12-20 2024-12-20 pure iso4217:USD 2025-02-03 false 0001021882 VANGUARD SCOTTSDALE FUNDS 2024-08-31 This example does not include the brokerage commissions that you may pay to buy and sell shares of the Fund. This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2024-12-20 2024-12-20 2024-12-20 2024-12-20 This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. 2025-02-03 N-1A 497 Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 3000 Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Fund’s Board of Trustees, Vanguard Russell 3000 Index Fund (the Fund) has reduced its expense ratio. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for the Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 3000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PSI 1854A 022025 Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Growth Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90 Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Value Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90 Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90 Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Growth Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Value Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 3000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Growth ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0812b-1 Distribution FeeNoneOther Expenses0.02Total Annual Fund Operating Expenses0.101The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$10$32$56$128This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Value ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0812b-1 Distribution FeeNoneOther Expenses0.02Total Annual Fund Operating Expenses0.101The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$10$32$56$128This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.02Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Growth ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Value ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Total Corporate Bond ETFSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024 Effective February 3, 2025, Vanguard Total Corporate Bond ETF (the Fund) has reduced its expense ratio. The Annual Fund Operating Expenses table and the hypothetical expenses example for the Fund are hereby deleted and replaced with the following: Prospectus and Summary Prospectus Text Changes for Vanguard Total Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0012b-1 Distribution FeeNoneOther Expenses0.00Acquired Fund Fees and Expenses0.03Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated as a result of the restatement of Acquired Fund Fees and Expenses to reflect a reduction in the expense ratios of certain underlying funds in which the Fund currently invests.ExampleThe following example is intended to help you compare the cost of investing in the Fund (based on the fees and expenses of the acquired funds) with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses (of the Fund and its underlying funds) remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell shares of the Fund.© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 985B 022025Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PSI 1642A 022025Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0312b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$104$113$122$151Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$29$38$48$76Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0312b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0312b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$106$119$134$176Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$31$44$59$102Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following: Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$31$44$59$102Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$106$119$134$176Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Short-Term Treasury Index FundVanguard Intermediate-Term Treasury Index FundVanguard Long-Term Treasury Index FundVanguard Short-Term Corporate Bond Index FundVanguard Intermediate-Term Corporate Bond Index FundVanguard Long-Term Corporate Bond Index FundVanguard Mortgage-Backed Securities Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury Index Fund, Vanguard Intermediate-Term Treasury Index Fund, Vanguard Long-Term Treasury Index Fund, Vanguard Short-Term Corporate Bond Index Fund, Vanguard Intermediate-Term Corporate Bond Index Fund, Vanguard Long-Term Corporate Bond Index Fund, and Vanguard Mortgage-Backed Securities Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0312b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0312b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$29$38$48$76Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0312b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$104$113$122$151Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0412b-1 Distribution FeeNoneOther Expenses0.00Total Annual Fund Operating Expenses0.041The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$4$13$23$51© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PSI 1642A 022025Vanguard Short-Term Treasury ETFVanguard Intermediate-Term Treasury ETFVanguard Long-Term Treasury ETFVanguard Short-Term Corporate Bond ETFVanguard Intermediate-Term Corporate Bond ETFVanguard Long-Term Corporate Bond ETFVanguard Mortgage-Backed Securities ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Short-Term Treasury ETF, Vanguard Intermediate-Term Treasury ETF, Vanguard Long-Term Treasury ETF, Vanguard Short-Term Corporate Bond ETF, Vanguard Intermediate-Term Corporate Bond ETF, Vanguard Long-Term Corporate Bond ETF, and Vanguard Mortgage-Backed Securities ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0212b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Total Corporate Bond ETFSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024 Effective February 3, 2025, Vanguard Total Corporate Bond ETF (the Fund) has reduced its expense ratio. The Annual Fund Operating Expenses table and the hypothetical expenses example for the Fund are hereby deleted and replaced with the following: Prospectus and Summary Prospectus Text Changes for Vanguard Total Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0012b-1 Distribution FeeNoneOther Expenses0.00Acquired Fund Fees and Expenses0.03Total Annual Fund Operating Expenses0.031The expense information shown in the table has been restated as a result of the restatement of Acquired Fund Fees and Expenses to reflect a reduction in the expense ratios of certain underlying funds in which the Fund currently invests.ExampleThe following example is intended to help you compare the cost of investing in the Fund (based on the fees and expenses of the acquired funds) with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses (of the Fund and its underlying funds) remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$3$10$17$39This example does not include the brokerage commissions that you may pay to buy and sell shares of the Fund.© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 985B 022025Vanguard Russell 1000 ETFVanguard Russell 1000 Value ETFVanguard Russell 1000 Growth ETFVanguard Russell 2000 ETFVanguard Russell 2000 Value ETFVanguard Russell 2000 Growth ETFVanguard Russell 3000 ETFSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 ETF, Vanguard Russell 1000 Value ETF, Vanguard Russell 1000 Growth ETF, Vanguard Russell 2000 ETF, Vanguard Russell 2000 Value ETF, Vanguard Russell 2000 Growth ETF, and Vanguard Russell 3000 ETF (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Value ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Growth ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.02Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Value ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0812b-1 Distribution FeeNoneOther Expenses0.02Total Annual Fund Operating Expenses0.101The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$10$32$56$128This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Growth ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0812b-1 Distribution FeeNoneOther Expenses0.02Total Annual Fund Operating Expenses0.101The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$10$32$56$128This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Prospectus and Summary Prospectus Text Changes for Vanguard Russell 3000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund.Vanguard Russell 1000 Index FundVanguard Russell 1000 Value Index FundVanguard Russell 1000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 1000 Index Fund, Vanguard Russell 1000 Value Index Fund, and Vanguard Russell 1000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Value Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Growth Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0512b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.061The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$6$19$34$77Vanguard Russell 2000 Index FundVanguard Russell 2000 Value Index FundVanguard Russell 2000 Growth Index FundSupplement to the Prospectus and Summary Prospectuses Dated December 20, 2024As approved by the Funds’ Board of Trustees, Vanguard Russell 2000 Index Fund, Vanguard Russell 2000 Value Index Fund, and Vanguard Russell 2000 Growth Index Fund (each, a Fund) have reduced their expense ratios. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for each Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Value Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Growth Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90Vanguard Russell 3000 Index FundSupplement to the Prospectus and Summary Prospectus Dated December 20, 2024As approved by the Fund’s Board of Trustees, Vanguard Russell 3000 Index Fund (the Fund) has reduced its expense ratio. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for the Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Russell 3000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.0612b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.071The expense information shown in the table has been restated to reflect current fees.ExampleThe following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:1 Year3 Years5 Years10 Years$7$23$40$90© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PSI 1854A 022025 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 31 44 59 102 Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 106 119 134 176 Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Admiral Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0003 0 0.0001 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 4 13 23 51 Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0003 0 0.0001 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 4 13 23 51 Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0004 0 0.0000 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 4 13 23 51 Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0004 0 0.0000 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 4 13 23 51 Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0004 0 0.0000 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 29 38 48 76 Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0003 0 0.0001 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 104 113 122 151 Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0004 0 0.0000 0.0004 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 4 13 23 51 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Treasury ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 Prospectus and Summary Prospectus Text Changes for Vanguard Short-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 Prospectus and Summary Prospectus Text Changes for Vanguard Intermediate-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 Prospectus and Summary Prospectus Text Changes for Vanguard Long-Term Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 Prospectus and Summary Prospectus Text Changes for Vanguard Mortgage-Backed Securities ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0002 0 0.0001 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Total Corporate Bond ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0000 0 0.0000 0.0003 0.0003 Example The following example is intended to help you compare the cost of investing in the Fund (based on the fees and expenses of the acquired funds) with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses (of the Fund and its underlying funds) remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 3 10 17 39 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Value ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Growth ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0002 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Value ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0008 0 0.0002 0.0010 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 10 32 56 128 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Growth ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0008 0 0.0002 0.0010 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 10 32 56 128 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 3000 ETFAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s ETF Shares with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to sell your shares at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Value Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 1000 Growth Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0005 0 0.0001 0.0006 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 6 19 34 77 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Value Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 2000 Growth Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 2024-12-20 Prospectus and Summary Prospectus Text Changes for Vanguard Russell 3000 Index FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) 0.0006 0 0.0001 0.0007 Example The following example is intended to help you compare the cost of investing in the Fund’s Institutional Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you were to invest $10,000 in the Fund’s shares. This example assumes that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 7 23 40 90 The expense information shown in the table has been restated as a result of the restatement of Acquired Fund Fees and Expenses to reflect a reduction in the expense ratios of certain underlying funds in which the Fund currently invests. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees. The expense information shown in the table has been restated to reflect current fees.