ACGL Arch Capital Group Ltd

Arch Capital Group Ltd. (NASDAQ: ACGL) announced that it expects to release its 2008 second quarter results after the close of regular stock market hours on Thursday, July 24, 2008. The Company will hold a conference call for investors and analysts at 11:00 a.m. Eastern Time on Friday, July 25, 2008. A live webcast of this call will be available via the Media-Earnings Webcasts section of the Company�s website at http://www.archcapgroup.bm and will be archived on the website from 1:00 p.m. Eastern Time on July 25 through midnight Eastern Time on August 25, 2008. A telephone replay of the conference call also will be available beginning on July 25 at 1:00 p.m. Eastern Time until August 1, 2008 at midnight Eastern Time. To access the replay, domestic callers should dial 888-286-8010 (passcode 63520973), and international callers should dial 617-801-6888 (passcode 63520973). Arch Capital Group Ltd., a Bermuda-based company with over $4.3 billion in capital at March 31, 2008, provides insurance and reinsurance on a worldwide basis through its wholly owned subsidiaries.