International Vector Equity Portfolio

SHARE CLASS (TICKER): INSTITUTIONAL CLASS (DFVQX)

Summary Prospectus

July 21, 2015

Before you invest, you may want to review the Portfolio’s Prospectus, which contains more information about the Portfolio and its risks. You can find the Portfolio’s Prospectus and other information about the Portfolio, including the Statement of Additional Information (SAI) and most recent reports to shareholders, when available, online at http://us.dimensional.com/other/prospectuses. You can also get this information at no cost by calling collect to (512) 306-7400 or by sending an e-mail request to document_requests@dimensional.com. The Portfolio’s Prospectus and SAI, both dated February 28, 2015, as may be supplemented, are incorporated by reference into this Summary Prospectus.

Investment Objective

The investment objective of the International Vector Equity 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 and hold shares of the International Vector Equity Portfolio.

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

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

Management Fee	0.45%
Other Expenses	0.04%
Total Annual Fund Operating Expenses	0.49%

EXAMPLE

This Example is meant to help you compare the cost of investing in the International Vector Equity 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 and then redeem all of your shares at the end of those periods. 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:

1 YEAR	3 YEARS	5 YEARS	10 YEARS
$50	$157	$274	$616

PORTFOLIO TURNOVER

The International Vector Equity 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 International Vector Equity Portfolio’s performance. During the most recent fiscal year, the International Vector Equity Portfolio’s portfolio turnover rate was 8% of the average value of its investment portfolio.

2    Dimensional Fund Advisors

Principal Investment Strategies

The International Vector Equity Portfolio purchases a broad and diverse group of securities of non-U.S. operating companies in developed markets, with a greater emphasis on small capitalization and value companies as compared to their representation in the International Universe. For purposes of this Portfolio, Dimensional Fund Advisors LP (the “Advisor”) defines the International Universe as a market capitalization weighted portfolio of non-U.S. companies in developed markets that have been authorized for investment by the Advisor’s Investment Committee. The Portfolio’s increased exposure to small capitalization and value companies may be achieved by decreasing the allocation of the International Vector Equity Portfolio’s assets to the largest growth companies relative to their weight in the International Universe or by avoiding purchases in that segment of the market, either of which would result in a greater weight allocation to small capitalization and value companies. An equity issuer is considered a growth company primarily because it has a low, non-negative book value in relation to its market capitalization. Securities are considered value stocks primarily because a company’s shares have a high book value in relation to their market value.

The Advisor determines company size on a country or region specific basis and based primarily on market capitalization. The Advisor will also establish a minimum market capitalization that a company must meet in order to be considered for purchase, which minimum will change due to market conditions.

The International Vector Equity Portfolio intends to purchase securities of companies associated with developed markets countries that the Advisor has designated as approved markets for investment. As a non-fundamental policy, under normal circumstances, the Portfolio will invest at least 80% of its net assets in equity securities. The percentage allocation of the assets of the International Vector Equity Portfolio to securities of the largest growth companies will generally be reduced by between 5% and 50% of their percentage weight in the International Universe. For example, as of December 31, 2014, securities of the largest growth companies in the International Universe comprised approximately 14% of the International Universe and the Advisor allocated approximately 1% of the International Vector Equity Portfolio to securities of the largest growth companies in the International Universe. The percentage by which the Portfolio’s allocation to securities of the largest growth companies is reduced, as compared to their representation in the International Universe, will change due to market movements and other factors. Additionally, the International Vector Equity Portfolio’s percentage allocation to all securities as compared to their representation in the International Universe may be modified after considering other factors the Advisor determines to be appropriate, such as free float, momentum, trading strategies, liquidity management, and profitability. In assessing profitability, the Advisor may consider different ratios, such as that of earnings or profits from operations relative to book value or assets.

The International Vector Equity Portfolio may gain exposure to companies associated with approved markets by purchasing equity securities in the form of depositary receipts, which may be listed or traded outside the issuer’s domicile country. The International Vector Equity Portfolio may use derivatives, such as futures contracts and options on

International Vector Equity Portfolio Summary Prospectus    3

futures contracts for foreign or U.S. equity securities and indices, to adjust market exposure based on actual or expected cash inflows to or outflows from the Portfolio. The Portfolio does not intend to use derivatives for purposes of speculation or leveraging investment returns.

The International Vector Equity Portfolio may lend its portfolio securities to generate additional income.

Principal Risks

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 International Vector Equity Portfolio that owns them, to rise or fall. Because the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.

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.

Foreign Securities and Currencies Risk: Foreign securities prices may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or (b) less regulated or liquid securities markets. Investors holding these securities may also be exposed to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, changing its value against the U.S. dollar). The International Vector Equity Portfolio does not hedge foreign currency risk.

Value Investment Risk: Value stocks may perform differently from the market as a whole and following a value-oriented investment strategy may cause the Portfolio to at times underperform equity funds that use other investment strategies.

Derivatives Risk: Derivatives are instruments, such as futures and foreign exchange forward contracts, whose value is derived from that of other assets, rates or indices. The use of derivatives for non-hedging purposes may be considered more speculative than other types of investments. When the International Vector Equity Portfolio uses derivatives, the Portfolio will be directly exposed to the risks of that derivative. Derivative instruments are subject to a number of risks including counterparty, liquidity, interest rate, market, credit and management risks, and 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.

4    Dimensional Fund Advisors

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 International Vector Equity Portfolio may lose money and there may be a delay in recovering the loaned securities. The International Vector Equity 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.

Cyber Security Risk: The International Vector Equity 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 International Vector Equity 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 International Vector Equity Portfolio’s performance from year to year. The table illustrates how annualized one year, five year and since inception returns, both before and after taxes, compare with those of a broad measure of market performance. The International Vector Equity 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 http://us.dimensional.com.

The after-tax returns presented in the table for the International Vector Equity 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-deferred arrangements, such as 401(k) plans or individual retirement accounts. A negative pre-tax total return translates into a higher after-tax return because this calculation assumes that an investor received a tax deduction for the loss incurred on the sale.

International Vector Equity Portfolio Summary Prospectus    5

International Vector Equity Portfolio Institutional Class Shares

Highest Quarter: January 2009–December 2014	(4/09–6/09	)	34.37
Lowest Quarter: January 2009–December 2014	(7/11–9/11	)	-21.68

Annualized Returns (%)

For the periods ending December 31, 2014

	1 YEAR			5 YEARS			SINCE 8/14/08 INCEPTION
International Vector Equity Portfolio
Return Before Taxes		-6.27	%		6.18	%		4.34	%
Return After Taxes on Distributions		-7.13	%		5.39	%		3.68	%
Return After Taxes on Distributions and Sale of Portfolio Shares		-2.94	%		4.83	%		3.39	%
MSCI World ex USA Index (net dividends) (reflects no deduction for fees, expenses, or taxes on sales)		-4.32	%		5.21	%		2.47	%

6    Dimensional Fund Advisors

Investment Advisor/Portfolio Management

Dimensional Fund Advisors LP serves as the investment advisor for the International Vector Equity Portfolio. Dimensional Fund Advisors Ltd. and DFA Australia Limited serve as the sub-advisors for the International Vector Equity Portfolio. The following individuals are responsible for coordinating the day to day management of the International Vector Equity Portfolio:

• Joseph H. Chi, Senior Portfolio Manager and Vice President of the Advisor, has been a portfolio manager since 2005.

• Jed S. Fogdall, Senior Portfolio Manager and Vice President of the Advisor, has been a portfolio manager since 2004.

• Allen Pu, Senior Portfolio Manager and Vice President of the Advisor, has been a portfolio manager since 2006.

• Bhanu P. Singh, Senior Portfolio Manager and Vice President of the Advisor, has been a portfolio manager since 2012.

Purchase and Redemption of Fund Shares

Investors may purchase or redeem shares of the International Vector Equity Portfolio on each day that the NYSE is open for business, regardless of whether the Federal Reserve System is closed, by first contacting the Portfolio’s transfer agent at (888) 576-1167. Shareholders that invest in the International Vector Equity Portfolio through a financial intermediary should contact their financial intermediary regarding purchase and redemption procedures. The International Vector Equity Portfolio generally is available for investment only by institutional clients, clients of registered investment advisors, clients of financial institutions and a limited number of certain other investors as approved from time to time by the Advisor. All investments are subject to approval of the Advisor.

Tax Information

The dividends and distributions you receive from the International Vector Equity Portfolio are taxable and generally will be taxed as ordinary income, capital gains, or some combination of both, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or an individual retirement account, in which case taxes are deferred until withdrawal from the plan or account.

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