hicago Mercantile Exchange Holdings Inc. Announces Date of 2004 Second Quarter Earnings Announcement, Conference Call CHICAGO, July 6 /PRNewswire-FirstCall/ -- Chicago Mercantile Exchange ) will announce earnings for the second quarter of 2004 before the financial markets open on Thursday, July 22. The company has scheduled an investor conference call that day at 8:30 a.m. Eastern time (7:30 ) All rights reserved. Republication or redistribution PRNewswire content is expressly prohibited without consent of PRNewswire.