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Prospectus Summary | U.S. MICRO CAP PORTFOLIO

U.S. Micro Cap Portfolio

Investment Objective

The investment objective of the U.S. Micro Cap Portfolio (the “Portfolio”) is to achieve long-term 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 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)

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

Annual Fund Operating Expenses	Prospectus Summary U.S. MICRO CAP PORTFOLIO Institutional Class
Management Fee	0.38%
Other Expenses	0.03%
Total Annual Fund Operating Expenses	0.41%

EXAMPLE

This Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing in other 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 whether you redeem or hold your shares would be:

Expense Example	Prospectus Summary U.S. MICRO CAP PORTFOLIO Institutional Class USD ($)
1 Year	$ 42
3 Years	132
5 Years	230
10 Years	$ 518

Expense Example, No Redemption	Prospectus Summary U.S. MICRO CAP PORTFOLIO Institutional Class USD ($)
1 Year	$ 42
3 Years	132
5 Years	230
10 Years	$ 518

PORTFOLIO TURNOVER

A fund generally 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 fund 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 22% of the average value of its investment portfolio.

Principal Investment Strategies

To achieve the U.S. Micro Cap Portfolio’s investment objective, Dimensional Fund Advisors LP (the “Advisor”) implements an integrated investment approach that combines research, portfolio design, portfolio management, and trading functions. As further described below, the Portfolio’s design emphasizes long-term drivers of expected returns identified by the Advisor’s research, while balancing risk through broad diversification across companies and sectors. The Advisor’s portfolio management and trading processes further balance those long-term drivers of expected returns with shorter-term drivers of expected returns and trading costs.

The U.S. Micro Cap Portfolio, using a market capitalization weighted approach, is designed to purchase a broad and diverse group of the securities of U.S. micro cap companies. A company’s market capitalization is the number of its shares outstanding times its price per share. Under a market capitalization weighted approach, companies with

higher market capitalizations generally represent a larger proportion of the Portfolio than companies with relatively lower market capitalizations. The Portfolio may emphasize certain stocks, including smaller capitalization companies, lower relative price stocks, and/or higher profitability stocks as compared to their representation in the micro-cap segment of the U.S. market. An equity issuer is considered to have a low relative price (i.e., a value stock) primarily because it has a low price in relation to its book value. In assessing relative price, the Advisor may consider additional factors such as price to cash flow or price to earnings ratios. An equity issuer is considered to have high profitability because it has high earnings or profits from operations in relation to its book value or assets. The criteria the Advisor uses for assessing relative price and profitability are subject to change from time to time.

As a non-fundamental policy, under normal circumstances, the U.S. Micro Cap Portfolio will invest at least 80% of its net assets in securities of U.S. micro cap companies. As of the date of this Prospectus, for the purposes of the Portfolio, the Advisor considers micro cap companies to be companies whose market capitalizations are generally in the lowest 5% of total market capitalization or companies whose market capitalizations are smaller than the 1,500th largest U.S. company, whichever results in the higher market capitalization break. Total market capitalization is based on the market capitalization of eligible U.S. operating companies listed on a securities exchange in the United States that is deemed appropriate by the Advisor. Under the Advisor’s market capitalization guidelines described above, based on market capitalization data as of December 31, 2023, the market capitalization of a micro cap company would be below $4,539 million. This threshold will change due to market conditions.

The Advisor may also increase or reduce the U.S. Micro Cap Portfolio’s exposure to an eligible company, or exclude a company, based on shorter-term considerations, such as a company’s price momentum, short-run reversals, and investment characteristics. In assessing a company’s investment characteristics, the Advisor considers ratios such as recent changes in assets divided by total assets. The criteria the Advisor uses for assessing a company’s investment characteristics are subject to change from time to time. In addition, the Advisor seeks to reduce trading costs using a flexible trading approach that looks for opportunities to participate in the available market liquidity, while managing turnover and explicit transaction costs.

The U.S. Micro Cap Portfolio may purchase or sell futures contracts and options on futures contracts for U.S. equity securities and indices to increase or decrease equity market exposure based on actual or expected cash inflows to or outflows from the Portfolio.

The U.S. Micro Cap Portfolio may lend its portfolio securities to generate additional income.

Principal Risks

Risk Table - Prospectus Summary - U.S. MICRO CAP PORTFOLIO

Risk [Text Block]

Risk Lose Money [Member]

Because the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.

Risk Not Insured [Member]

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.

Equity Market Risk

Equity Market Risk: Even a long-term investment approach cannot guarantee a profit. Economic, market, political, and issuer-specific conditions and events will cause the value of equity securities, and a fund that owns them, to rise or fall. Stock markets are volatile, with periods of rising prices and periods of falling prices.

Small Company Risk

Small Company Risk: Securities of small companies are often less liquid than those of large companies and this could make it difficult to sell a small company security at a desired time or price. As a result, small company stocks may fluctuate relatively more in price. In general, smaller capitalization companies are also more vulnerable than larger companies to adverse business or economic developments and they may have more limited resources.

Profitability Investment Risk

Profitability Investment Risk: High relative profitability stocks may perform differently from the market as a whole and an investment strategy purchasing these securities may cause a fund to at times underperform equity funds that use other investment strategies.

Value Investment Risk

Value Investment Risk: Value stocks may perform differently from the market as a whole and an investment strategy purchasing these securities may cause a fund to at times underperform equity funds that use other investment strategies. Value stocks can react differently to political, economic, and industry developments than the market as a whole and other types of stocks. Value stocks also may underperform the market for long periods of time.

Derivatives Risk

Derivatives Risk: Derivatives are instruments, such as futures contracts, and options thereon, whose value is derived from that of other assets, rates or indices. The use of derivatives for non-hedging purposes may be considered to carry more risk than other types of investments. When a fund uses derivatives, the fund 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 a fund could lose more than the principal amount invested.

Securities Lending Risk

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, a fund may lose money and there may be a delay in recovering the loaned securities. A fund 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 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 a fund’s or its advisor’s control, including instances at third parties. A fund and its advisor seek to reduce these operational risks through controls and procedures. However, measures that seek to reduce these operational risks through controls and procedures may not address every possible risk and may be inadequate to address these risks.

Cyber Security Risk

Cyber Security Risk: A fund and its service providers’ use of internet, technology and information systems may expose the fund 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 fund 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 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 returns for certain periods, both before and after taxes, compare with those of a broad measure of market performance. The table also includes the performance of an additional index with a similar investment universe as the Portfolio. 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 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.

U.S. Micro Cap Portfolio Institutional Class Shares —Total Returns

Annualized Returns (%)

Average Annual Total Returns - Prospectus Summary - U.S. MICRO CAP PORTFOLIO		Label	1 Year	5 Years	10 Years
Institutional Class		Return Before Taxes	17.86%	12.12%	8.05%
Institutional Class | After Taxes on Distributions		Return After Taxes on Distributions	17.13%	10.97%	6.78%
Institutional Class | After Taxes on Distributions and Sales		Return After Taxes on Distributions and Sale of Portfolio Shares	11.03%	9.56%	6.23%
Russell 2000® Index		Russell 2000® Index
Russell 2000® Index			16.93%	9.97%	7.16%
Russell 3000® Index1	[1]	Russell 3000® Index1
Russell 3000® Index1			25.96%	15.16%	11.48%

[1] Effective February 28, 2024, the Portfolio incorporated this broad-based securities market index to reflect the overall applicable securities market of the Portfolio.