Arch Reinsurance Ltd. Announces Opening of Zurich Branch

Arch Reinsurance Ltd. is pleased to announce the opening of its
branch office in Zurich, Switzerland. The new office further extends
Arch Reinsurance Ltd.'s commitment to the Continental European
reinsurance market, and will focus on regional business that is
complimentary to the existing relationships of Arch Re in Bermuda. The
new office will also have a strong emphasis on the broker market.

The office will operate as Arch Reinsurance Ltd., Hamilton
(Bermuda), European Branch Zurich, and will be headed by two new
executives. Helmut Sohler will serve as President and Chief Executive
Officer, and Bjorn Bucher will be the Chief Underwriting Officer. Arch
Re is enthusiastic about the hiring of these two exceptional
underwriters with extensive experience in various lines in Europe. Mr.
Sohler was most recently a Board Member of Gothaer, a German mutual
insurer, and Mr. Bucher was previously Chief Underwriting Officer at
Alea Europe. Mr. Sohler will report to Marc Grandisson, Chairman and
Chief Executive Officer of Arch Worldwide Reinsurance Group.

Cautionary Note Regarding Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a
"safe harbor" for forward-looking statements. This release or any
other written or oral statements made by or on behalf of Arch Capital
Group Ltd. and its subsidiaries (collectively, the "Company") may
include forward-looking statements which reflect the Company's current
views with respect to future events and financial performance.
Forward-looking statements involve the Company's current assessment of
risks and uncertainties, which may cause actual events and results and
prospects to differ materially from those expressed or implied in
these statements. Certain information regarding such risks and
uncertainties is set forth in the Company's filings with the
Securities and Exchange Commission. The Company undertakes no
obligation to publicly update or revise any forward-looking statement,
whether as a result of new information, future events or otherwise.