X0201 4 2004-04-16 0 0001190935 PIMCO CORPORATE OPPORTUNITY FUND PTY 0001201891 GROSS WILLIAM H 840 NEWPORT CENTER DRIVE, SUITE 100 NEWPORT BEACH CA 92660 0 0 0 1 Executive Committee Common Stock 2004-04-16 4 P 0 55700 15.56 A 1895800 I Owned by Children This shall not be deemed an admission that such person is, for purposes of Section 16 of the Act or otherwise, the beneficial owner of any equity securities covered by this statement. Pacific Investment Management Company LLC (PIMCO) is the investment adviser of the Issuer. Mr. Gross is a member of PIMCO's Executive Committee. Brian S. Shlissel, Attorney in fact for William H. Gross 2004-04-19