PEMBROKE, Bermuda, Oct. 9 /PRNewswire-FirstCall/ -- Allied World Assurance Company Holdings, Ltd today announced that it has revised the time of its earnings call to 8:00 a.m. (Eastern Time) on Friday, November 6, 2009, to discuss its third quarter 2009 financial results. Scott Carmilani, President and Chief Executive Officer, and Joan Dillard, Chief Financial Officer, will host the conference call that will include a question and answer session. Allied World will release its third quarter 2009 financial results after the close of market on Thursday, November 5, 2009.

The conference call can be accessed by dialing (800) 510-9836 (U.S. and Canada callers) or (617) 614-3670 (international callers) and entering the passcode 92163598 approximately ten minutes prior to the call. A live webcast of the call will be available online at http://www.awac.com/. A replay of the call will be available through Friday, November 20, 2009 by dialing (888) 286-8010 (U.S. and Canada callers) or (617) 801-6888 (international callers) and entering the passcode 71145005. In addition, the webcast will remain available online through Friday, November 20, 2009 at http://www.awac.com/.

About Allied World Assurance Company

Allied World Assurance Company Holdings, Ltd, through its subsidiaries, is a global provider of innovative property, casualty and specialty insurance and reinsurance solutions, offering superior client service through offices in Bermuda, the United States, Europe and Hong Kong. Our insurance and reinsurance subsidiaries are rated A (Excellent) by A.M. Best Company. For further information on Allied World, please visit our website at http://www.awac.com/.

Allied World Assurance Company Holdings, Ltd

CONTACT: Media, Faye Cook, Vice President, Marketing & Communications,
+1-441-278-5406, faye.cook@awac.com or Investors, Keith J. Lennox, Investor
Relations Officer, +1-646-794-0750, keith.lennox@awac.com

Web site: http://www.awac.com/