Arch Capital Group Ltd. to Report 2012 Fourth Quarter Results on February 11, 2013

  Arch Capital Group Ltd. to Report 2012 Fourth Quarter Results on February
  11, 2013

Business Wire

HAMILTON, Bermuda -- January 10, 2013

Arch Capital Group Ltd. (NASDAQ: ACGL) announced that it expects to release
its 2012 fourth quarter results after the close of regular stock market hours
on Monday, February 11, 2013. The Company will hold a conference call for
investors and analysts at 11:00 a.m. Eastern Time on Tuesday, February 12,
2013.

A live webcast of this call will be available via the Investor Relations –
Events & Presentations section of the Company’s website at
http://www.archcapgroup.bm. A telephone replay of the conference call also
will be available beginning on February 12 at 1:00 p.m. Eastern Time until
February 19, 2013 at midnight Eastern Time. To access the replay, domestic
callers should dial 888-286-8010 (passcode 32313678), and international
callers should dial 617-801-6888 (passcode 32313678).

Arch Capital Group Ltd., a Bermuda-based company with approximately $5.75
billion in capital at September 30, 2012, provides insurance and reinsurance
on a worldwide basis through its wholly owned subsidiaries.

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 may include forward−looking statements, which reflect our current
views with respect to future events and financial performance. All statements
other than statements of historical fact included in or incorporated by
reference in this release are forward−looking statements.

Forward−looking statements can generally be identified by the use of
forward−looking terminology such as "may," "will," "expect," "intend,"
"estimate," "anticipate," "believe" or "continue" or their negative or
variations or similar terminology. Forward−looking statements involve our
current assessment of risks and uncertainties. Actual events and results may
differ materially from those expressed or implied in these statements. A
non-exclusive list of the important factors that could cause actual results to
differ materially from those in such forward-looking statements includes the
following: adverse  general economic and market conditions;  increased
competition;  pricing and policy term trends;  fluctuations in the actions of
rating agencies and our  ability to maintain and improve our ratings;
investment performance;  the loss of key personnel;  the adequacy of our loss
reserves,  severity and/or frequency of losses, greater than expected loss
ratios and adverse development on claim and/or claim expense liabilities; 
greater frequency or severity of unpredictable natural and man-made
catastrophic events;the impact of acts of terrorism and acts of war; changes
in regulations and/or tax laws in the United States or elsewhere;  our ability
to successfully integrate, establish and maintain operating procedures as well
as integrate the businesses we have acquired or may acquire into the existing
operations;  changes in accounting principles or policies;  material
differences between actual and expected assessments for guaranty funds and
mandatory pooling arrangements;  availability and cost to us of reinsurance to
manage our gross and net exposures;  the failure of others to meet their
obligations to us; and  other factors identified in our filings with the U.S.
Securities and Exchange Commission.

The foregoing review of important factors should not be construed as
exhaustive and should be read in conjunction with other cautionary statements
that are included herein or elsewhere. All subsequent written and oral
forward−looking statements attributable to us or persons acting on our behalf
are expressly qualified in their entirety by these cautionary statements. We
undertake no obligation to publicly update or revise any forward−looking
statement, whether as a result of new information, future events or otherwise.

Contact:

Arch Capital Group Ltd.
Mark D. Lyons, 441-278-9250