For a prospectus and more information about The Oakmark Funds, including management fees and expenses and the special risks of investing, please visit oakmark.com or call 1-800-OAKMARK (1-800-625-6275). Please read the prospectus carefully before investing. An investor should consider a fund’s investment objectives, risks, and charges and expenses carefully before investing. This and other information about The Oakmark Funds are contained in the Funds’ prospectus.

The discussion of the Funds’ investments and investment strategy (including current investment themes, the portfolio managers’ research and investment process, and portfolio characteristics) represents the Funds’ investments and the views of the portfolio managers and Harris Associates L.P., the Funds’ investment adviser, at the time of this letter, and are subject to change without notice.

Past performance is no guarantee of future results. The performance data quoted represents past performance. Current performance may be lower or higher than the performance data quoted. The investment return and principal value vary so that an investor’s shares when redeemed may be worth more or less than their original cost. The performance of the Funds does not reflect a 2% redemption fee on shares held by an investor for 90 days or less with the exception of The Oakmark Equity & Income Fund which does not impose a redemption fee. The purpose of the fee is to deter market timers.

Investing in value stocks presents the risk that value stocks may fall out of favor with investors and underperform growth stocks during given periods.

The Oakmark Global Fund closed to certain new investors as of 12/15/03 and The Oakmark Equity and Income Fund closed to certain new investors as of 5/7/04.

Because The Oakmark Select Fund and The Oakmark Global Select Fund are non-diversified, the performance of each holding will have a greater impact on each Fund’s total return, and may make the Funds’ returns more volatile than a more diversified fund.

The Oakmark Equity and Income Fund invests in medium- and lower-quality debt securities that have higher yield potential but present greater investment and credit risk than higher-quality securities, which may result in greater share price volatility. An economic downturn could severely disrupt the market in medium or lower grade debt securities and adversely affect the value of outstanding bonds and the ability of the issuers to repay principal and interest.

Investing in foreign securities represents risks which in some way may be greater than in U.S. investments. Those risks include: currency fluctuation; different regulation, accounting standards, trading practices and levels of available information; generally higher transaction costs; and political risks.

The stocks of smaller companies often involve more risk than the stocks of larger companies. Stocks of small companies tend to be more volatile and have a smaller public market than stocks of larger companies. Small companies may have a shorter history of operations than larger companies, may not have as great an ability to raise additional capital and may have a less diversified product line, making them more susceptible to market pressure.