ACGL Arch Capital Group Ltd

Arch Capital Group Ltd. (NASDAQ: ACGL) announced that it expects to release its 2005 second quarter results after the close of regular stock market hours on Thursday, July 28, 2005. The Company will hold a conference call for investors and analysts at 10:00 a.m. Eastern Time on Friday, July 29, 2005. 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 12:00 p.m. Eastern Time on July 29 through midnight Eastern Time on August 29, 2005. A telephone replay of the conference call also will be available beginning on July 29 at 12:00 p.m. Eastern Time until August 5 at midnight Eastern Time. To access the replay, domestic callers should dial 888-286-8010 (passcode 46331971), and international callers should dial 617-801-6888 (passcode 46331971). Arch Capital Group Ltd., a Bermuda-based company with over $2.5 billion in capital, provides insurance and reinsurance on a worldwide basis through its wholly owned subsidiaries.