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DFA TWO-YEAR GOVERNMENT PORTFOLIO

DFA Two-Year Government Portfolio

Investment Objective

The investment objective of the DFA Two-Year Government Portfolio (the “Two-Year Government Portfolio” or the “Portfolio”) is to maximize total returns available from the universe of debt obligations of the U.S. Government and U.S. government agencies consistent with the preservation of capital. Total return is comprised of income and capital appreciation.

Fees and Expenses of the Portfolio

This table describes the fees and expenses you may pay if you buy, hold or sell shares of the Two-Year Government Portfolio. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below.

Shareholder Fees (fees paid directly from your investment): None

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

Annual Fund Operating Expenses	DFA TWO-YEAR GOVERNMENT PORTFOLIO DFA TWO-YEAR GOVERNMENT PORTFOLIO	[1]
Management Fee	0.10%
Other Expenses	0.05%
Recovery of Previously Waived Fees	0.01%	[2]
Total Annual Fund Operating Expenses	0.16%

EXAMPLE

This Example is meant to help you compare the cost of investing in the Two-Year Government Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
DFA TWO-YEAR GOVERNMENT PORTFOLIO | DFA TWO-YEAR GOVERNMENT PORTFOLIO | USD ($)	16	52	90	205

PORTFOLIO TURNOVER

The Two-Year Government Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when Portfolio shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 121% of the average value of its investment portfolio.

Principal Investment Strategies

The Two-Year Government Portfolio seeks to maximize total returns from a universe of obligations of the U.S. Government and its agencies maturing in three years or less from the date of settlement. The average weighted length of maturity of the Portfolio’s investments will not exceed two years. In making purchase decisions, if the expected term premium is greater for longer-term securities in the eligible maturity range, Dimensional Fund Advisors LP (the “Advisor”) will focus investment in the longer-term area, otherwise, the Portfolio will focus investment in the shorter-term area of the eligible maturity range. The credit quality of the securities purchased by the Portfolio will be that of the U.S. Government or its agencies. The Portfolio also may enter into repurchase agreements backed by U.S. government securities. The Portfolio may also invest in money market funds. In addition, the Portfolio is authorized to invest more than 25% of its total assets in U.S. Treasury bonds, bills and notes, and obligations of federal agencies and instrumentalities.

As a non-fundamental policy, under normal circumstances, the Two-Year Government Portfolio will invest at least 80% of its net assets in government securities that mature within two years from the date of settlement.

The Two-Year Government Portfolio may invest in futures contracts and options on futures contracts. The Portfolio may use fixed income related futures and options contracts, swaps and other types of derivatives to hedge against changes in interest rates. To the extent that it invests in futures contracts and options thereon for other than bona fide hedging purposes, it will not purchase futures contracts or options thereon, if, as a result, more than 5% of its net assets would then consist of initial margin deposits and premiums required to establish such positions. The Portfolio may purchase or sell futures contracts and options on futures contracts, to hedge its interest rate exposure or for non-hedging purposes, such as a substitute for direct investment or to increase or decrease market exposure based on actual or expected cash inflows to or outflows from the Portfolio.

The Two-Year Government Portfolio may lend its portfolio securities to generate additional income.

Principal Risks

Because the value of your investment in the Two-Year Government Portfolio will fluctuate, there is the risk that you will lose money. An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following is a description of principal risks of investing in the Portfolio.

Market Risk: Even a long-term investment approach cannot guarantee a profit. Economic, political, and issuer-specific events will cause the value of securities, and the Portfolio that owns them, to rise or fall.

Income Risk: Income risk is the risk that falling interest rates will cause the Portfolio’s income to decline because, among other reasons, the proceeds from maturing short-term securities in its portfolio may be reinvested in lower-yielding securities.

Interest Rate Risk: Fixed income securities are subject to interest rate risk because the prices of fixed income securities tend to move in the opposite direction of interest rates. When interest rates rise, fixed income security prices fall. During periods of very low or negative interest rates, the Portfolio may be subject to a greater risk of rising interest rates. When interest rates fall, fixed income security prices rise. In general, securities with longer maturities are more sensitive to changes in interest rates.

Credit Risk: Credit risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal when due. A downgrade to an issuer’s credit rating or a perceived change in an issuer’s financial strength may affect a security’s value, and thus, impact the Portfolio’s performance. Government agency obligations have different levels of credit support and, therefore, different degrees of credit risk. Securities issued by agencies and instrumentalities of the U.S. Government that are supported by the full faith and credit of the United States, such as the Federal Housing Administration and Ginnie Mae, present little credit risk. Other securities issued by agencies and instrumentalities sponsored by the U.S. Government, that are supported only by the issuer’s right to borrow from the U.S. Treasury, subject to certain limitations, and securities issued by

agencies and instrumentalities sponsored by the U.S. Government that are sponsored by the credit of the issuing agencies, such as Freddie Mac and Fannie Mae, are subject to a greater degree of credit risk. U.S. government agency securities issued or guaranteed by the credit of the agency may still involve a risk of non-payment of principal and/or interest.

Derivatives Risk: Derivatives are instruments, such as swaps, futures contracts, and options thereon, whose value is derived from that of other assets, rates or indices. Derivatives can be used for hedging (attempting to reduce risk by offsetting one investment position with another) or non-hedging purposes. Hedging with derivatives may increase expenses, and there is no guarantee that a hedging strategy will work. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains or cause losses if the market moves in a manner different from that anticipated by the Portfolio or if the cost of the derivative outweighs the benefit of the hedge. The use of derivatives for non-hedging purposes may be considered to carry more risk than other types of investments. When the Portfolio uses derivatives, the Portfolio will be directly exposed to the risks of those derivatives. Derivative instruments are subject to a number of risks including counterparty, liquidity, interest rate, market, credit and management risks, as well as the risk of improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, and the Portfolio could lose more than the principal amount invested. Additional risks are associated with the use of swaps including counterparty and credit risk (the risk that the other party to a swap agreement will not fulfill its contractual obligations, whether because of bankruptcy or other default) and liquidity risk (the possible lack of a secondary market for the swap agreement). Credit risk increases when the Portfolio is the seller of swaps and counterparty risk increases when the Portfolio is a buyer of swaps. In addition, where the Portfolio is the seller of swaps, it may be required to liquidate portfolio securities at inopportune times in order to meet payment obligations. Swaps may be illiquid or difficult to value.

Liquidity Risk: Liquidity risk exists when particular Portfolio investments are difficult to purchase or sell. To the extent that the Portfolio holds illiquid investments, the Portfolio’s performance may be reduced due to an inability to sell the investments at opportune prices or times. Liquid portfolio investments may become illiquid or less liquid after purchase by the Portfolio due to low trading volume, adverse investor perceptions and/or other market developments. Liquidity risk includes the risk that the Portfolio will experience significant net redemptions at a time when it cannot find willing buyers for its portfolio securities or can only sell its portfolio securities at a material loss or at increased costs. Liquidity risk can be more pronounced in periods of market turmoil or in situations where ownership of shares of the Portfolio are concentrated in one or a few investors.

Securities Lending Risk: Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Portfolio may lose money and there may be a delay in recovering the loaned securities. The Portfolio could also lose money if it does not recover the securities and/or the value of the collateral falls, including the value of investments made with cash collateral. Securities lending also may have certain adverse tax consequences.

Operational Risk: Operational risks include human error, changes in personnel, system changes, faults in communication, and failures in systems, technology, or processes. Various operational events or circumstances are outside the Advisor’s control, including instances at third parties. The Portfolio and the Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.

Cyber Security Risk: The Portfolio’s and its service providers’ use of internet, technology and information systems may expose the Portfolio to potential risks linked to cyber security breaches of those technological or information systems. Cyber security breaches, amongst other things, could allow an unauthorized party to gain access to proprietary information, customer data, or fund assets, or cause the Portfolio and/or its service providers to suffer data corruption or lose operational functionality.

Performance

The bar chart and table immediately following illustrate the variability of the Two-Year Government Portfolio’s returns and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows the

changes in the Portfolio’s performance from year to year. The table illustrates how annualized one year, five year and ten year returns, both before and after taxes, compare with those of a broad measure of market performance. The Portfolio’s past performance (before and after taxes) is not an indication of future results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.

The after-tax returns presented in the table for the Two-Year Government Portfolio are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown in the table. In addition, the after-tax returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.

DFA Two-Year Government Portfolio—Total Returns

January 2013-December 2022

Highest Quarter
0.92% (10/18–12/18) Lowest Quarter
-2.36% (1/22–3/22)

Annualized Returns (%)Periods ending December 31, 2022

Average Annual Returns - DFA TWO-YEAR GOVERNMENT PORTFOLIO		1 Year	5 Years	10 Years
DFA TWO-YEAR GOVERNMENT PORTFOLIO		(3.02%)	0.08%	0.20%
After Taxes on Distributions | DFA TWO-YEAR GOVERNMENT PORTFOLIO		(3.47%)	(0.34%)	(0.13%)
After Taxes on Distributions and Sale of Portfolio Shares | DFA TWO-YEAR GOVERNMENT PORTFOLIO		(1.79%)	(0.11%)	0.02%
ICE BofA 1-3 Year US Treasury & Agency Index (reflects no deduction for fees, expenses, or taxes)	[1]	(3.65%)	0.77%	0.67%

[1] The “Management Fee” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Two-Year Government Portfolio from 0.14% to 0.10% effective as of February 28, 2022.

[2] Dimensional Fund Advisors LP (the “Advisor”) has agreed to waive certain fees and in certain instances, assume certain expenses of the Two-Year Government Portfolio. The Fee Waiver and Expense Assumption Agreement for the Portfolio will remain in effect through February 28, 2024, and may only be terminated by the Fund’s Board of Directors prior to that date. The Advisor retains the right to seek reimbursement for any fees previously waived and/or expenses previously assumed up to thirty-six months after such fee waiver and/or expense assumption.

[1] ICE BofA index data copyright 2022 ICE Data Indices, LLC.