Investments in overseas markets can pose more risks than U.S. investments, and share prices are expected to be more volatile than that of a U.S.-only fund. The Driehaus Emerging Markets Growth Fund, Driehaus Emerging Markets Small Cap Growth Fund, Driehaus International Small Cap Growth Fund and the Driehaus Event Driven Fund invest in foreign securities, including small and mid cap stocks, which may be subject to greater volatility than other investments. During certain periods, these Funds have benefited from unusually strong market conditions in the overseas markets. In addition, returns of these Funds will fluctuate with changes in stock market conditions, currency values, interest rates, foreign government regulations, and economic and political conditions in countries in which these Funds invest. These risks are generally greater when investing in emerging markets. These and other risk considerations are discussed in the prospectus for these Funds.

At times, a significant portion of a Fund's return may be attributable to investments in initial public offerings (IPOs) or concentrations in certain strong performing sectors, such as technology. Returns from IPOs or sector concentrations may not be repeated or consistently achieved in the future. In addition, participating in IPOs and other investments during favorable market conditions may enhance the performance of a Fund with a smaller asset base, and this Fund may not experience similar performance results as its assets grow.

Stocks of medium-sized companies tend to be more volatile in price than those of larger companies and may have underperformed the stocks of small and large companies during some periods. In addition, investments in medium-sized companies may be more susceptible to particular economic events or competitive factors than are larger, more broadly diversified companies. Growth stocks may involve special risks and their prices may be more volatile than the overall market.

The Driehaus Active Income Fund and the Driehaus Event Driven Fund (the "Funds"), in addition to investing in unrated and investment grade bonds, may also invest in junk bonds, which involve greater credit risk, including the risk of default. The prices of high yield bonds are more sensitive to changing economic conditions and can fall dramatically in response to negative news about the issuer or its industry, or the economy in general. The use of derivatives involves risks different from, and possibly greater than, the risks associated with investing directly in the underlying assets. Derivatives can be highly volatile, illiquid and difficult to value, and there is a risk that changes in the value of a derivative held by the Funds will not correlate with the Funds other investments. Further, the Funds may invest in derivatives for speculative purposes. Gains or losses from speculative positions in a derivative may be much greater than the derivative's original cost and potential losses may be substantial. The Funds may make short sales. Short sales expose the Funds to the risk of loss. It is anticipated that the Funds will experience high rates of portfolio turnover, which may result in payment by the Funds of above-average transaction costs. This is a nondiversified fund; compared to other funds, the Funds may invest a greater percentage of assets in a particular issuer or a small number of issuers. As a consequence, the Funds may be subject to greater risks and larger losses than diversified funds. No investment strategy, including an absolute return strategy, can ensure a profit or protect against loss. Additionally, investing in an absolute return strategy may lead to underperformance.