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Vanguard Total World Stock Index Fund

Summary Prospectus

February 28, 2013

Investor Shares for Participants

Vanguard Total World Stock Index Fund Investor Shares (VTWSX)

The Fund’s statutory Prospectus and Statement of Additional Information dated

February 28, 2013, are incorporated into and made part of this Summary

Prospectus by reference.

Before you invest, you may want to review the Fund’s Prospectus, which

contains more information about the Fund and its risks. You can find

the Fund’s Prospectus and other information about the Fund online at

www.vanguard.com/prospectus. You can also get this information at no

cost by calling 800-523-1188 or by sending an e-mail request to

online@vanguard.com.

The Securities and Exchange Commission (SEC) has not approved or disapproved these securities or

passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

Investment Objective

The Fund seeks to track the performance of a benchmark index that measures the investment return of stocks of companies located in developed and emerging markets around the world.

Fees and Expenses

The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund.


Shareholder Fees
(Fees paid directly from your investment)

Sales Charge (Load) Imposed on Purchases	None
Purchase Fee	None
Sales Charge (Load) Imposed on Reinvested Dividends	None
Redemption Fee	None

Annual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)

Management Expenses	0.31%
12b-1 Distribution Fee	None
Other Expenses	0.04%
Total Annual Fund Operating Expenses	0.35%

Example

The following example is intended to help you compare the cost of investing in the Fund’s Investor Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund’s shares. This example assumes that the Shares provide a return of 5% a year and that total annual fund operating expenses remain as stated in the preceding table. The results apply whether or not you 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 Year	3 Years	5 Years	10 Years
$36	$113	$197	$443

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in more taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 16%.

Primary Investment Strategies

The Fund employs an indexing investment approach designed to track the performance of the FTSE Global All Cap Index, a free-float-adjusted, market-capitalization-weighted index designed to measure the market performance of large-, mid-, and small-capitalization stocks of companies located around the world. The Index includes approximately 7,240 stocks of companies located in 50 countries, including both developed and emerging markets. As of October 31, 2012, the largest markets covered in the Index were the United States, the United Kingdom, Japan, and Canada (which made up approximately 46%, 8%, 7%, and 4%, respectively, of the Index’s market capitalization). The Fund typically holds approximately 4,000 of the stocks that make up its target index (covering nearly 98% of the Index’s total market capitalization) and a representative sample of the remaining stocks. The Fund holds a broadly diversified collection of securities that, in the aggregate, approximates the full Index in terms of key characteristics. These key characteristics include industry weightings, country weightings, and market capitalization, as well as certain financial measures, such as price/earnings ratio and dividend yield.

Primary Risks

An investment in the Fund could lose money over short or even long periods. You should expect the Fund’s share price and total return to fluctuate within a wide range, like the fluctuations of global stock markets. The Fund is subject to the following risks, which could affect the Fund’s performance:

• Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. The Fund’s investments in foreign stocks can be riskier than U.S. stock investments. The prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. In addition, the Fund’s target index may, at times, become focused in stocks of a particular sector, category, or group of companies.

• Investment style risk, which is the chance that returns from the types of stocks in which the Fund invests will trail returns from global stock markets. Small-, mid-, and large-cap stocks each tend to go through cycles of doing better—or worse—than other segments of the stock market or the global stock market in general. These

periods have, in the past, lasted for as long as several years. Historically, small- and mid-cap stocks have been more volatile in price than large-cap stocks. Small and mid-size companies tend to have greater stock volatility because, among other things, these companies are more sensitive to changing economic conditions.

• Country/regional risk, which is the chance that world events—such as political upheaval, financial troubles, or natural disasters—will adversely affect the value of securities issued by companies in foreign countries or regions. Because the Fund may invest a large portion of its assets in securities of companies located in any one country or region, the Fund’s performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets.

• Emerging markets risk, which is the chance that the stocks of companies located in emerging markets will be substantially more volatile, and substantially less liquid, than the stocks of companies located in more developed foreign markets.

• Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates. Currency risk is especially high in emerging markets.

• Index sampling risk, which is the chance that the securities selected for the Fund, in the aggregate, will not provide investment performance matching that of the Fund’s target index. Index sampling risk for the Fund should be low.

An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Annual Total Returns

The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund‘s Investor Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of the Fund‘s target index and other comparative indexes, which have investment characteristics similar to those of the Fund. Returns for the FTSE Indexes shown are adjusted for withholding taxes applicable to U.S.-based mutual funds organized as Delaware statutory trusts. Keep in mind that the Fund’s past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.

Annual Total Returns — Vanguard Total World Stock Index Fund Investor Shares

During the periods shown in the bar chart, the highest return for a calendar quarter was 22.58% (quarter ended June 30, 2009), and the lowest return for a quarter was –18.20% (quarter ended September 30, 2011).


Average Annual Total Returns for Periods Ended December 31, 2012
		Since
		Inception
		(Jun. 26,
	1 Year	2008)
Vanguard Total World Stock Index Fund Investor Shares	17.15%	1.88%
Comparative Indexes
(reflect no deduction for fees or expenses)
FTSE Global All Cap Index	16.69%	—%
FTSE All-World Index	16.61	1.58
Spliced Total World Stock Index	16.69	1.59

Investment Advisor

The Vanguard Group, Inc.

Portfolio Manager

Ryan E. Ludt, Principal of Vanguard. He has managed the Fund since its inception in 2008.

Tax Information

The Fund’s distributions will be reinvested in additional Fund shares and accumulate on a tax-deferred basis if you are investing through an employer-sponsored retirement or savings plan. You will not owe taxes on these distributions until you begin withdrawals from the plan. You should consult your plan administrator, your plan’s Summary Plan Description, or your tax advisor about the tax consequences of plan withdrawals.

Payments to Financial Intermediaries

The Fund and its investment advisor do not pay financial intermediaries for sales of Fund shares.

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Vanguard Total World Stock Index Fund Investor Shares—Fund Number 628

The Vanguard Total World Stock Index Fund is not in any way sponsored, endorsed, sold or promoted by FTSE International Limited (“FTSE”) the London Stock Exchange Group companies (“LSEG”) (together the “Licensor Parties”) and none of the Licensor Parties make any claim, prediction, warranty or representation whatsoever, expressly or impliedly, either as to (i) the results to be obtained from the use of the FTSE Global All Cap Index (the “Index”) (upon which the Vanguard Total World Stock Index Fund is based), (ii) the figure at which the Index is said to stand at any particular time on any particular day or otherwise, or (iii) the suitability of the Index for the purpose to which it is being put in connection with the Vanguard Total World Stock Index Fund. None of the Licensor Parties have provided or will provide any financial or investment advice or recommendation in relation to the Index to Vanguard or to its clients. The Index is calculated by FTSE or its agent. None of the Licensor Parties shall be (a) liable (whether in negligence or otherwise) to any person for any error in the Index or (b) under any obligation to advise any person of any error therein. All rights in the Index vest in FTSE. “FTSE^®” is a trademark of LSEG and is used by FTSE under licence.

SPI 628 022013