The US Vector Equity Portfolio is a no-load mutual fund designed to achieve long-term capital appreciation. The Portfolio seeks to purchase a broad and diverse group of securities of US companies with an increased exposure to small cap companies and those Dimensional considers value companies relative to the US market universe. The universe is comprised of companies listed on the New York Stock Exchange, Nasdaq Global Market® or such other securities exchanges deemed appropriate by Dimensional. Increased exposure to small and value companies may be achieved by decreasing the allocation of the portfolio's assets in large growth companies relative to their weight in the US universe or by avoiding purchases in that segment of the market. Securities are considered value stocks primarily because a company's shares have a high book value in relation to their market value (BtM). In assessing value, additional factors such as price to cash flow or price to earnings ratios may be considered, as well as economic conditions and developments in the issuer's industry. The criteria for assessing value are subject to change from time to time.

For a full description, please consult the Portfolio's prospectus.