Allied World Assurance Company Holdings, Ltd to Participate in Fox-Pitt, Kelton's 2006 ''Bermuda in Boston'' Conference

Allied World Assurance Company Holdings, Ltd (NYSE: AWH)
announced today that Scott Carmilani, President and Chief Executive
Officer, and Joan Dillard, Senior Vice President and Chief Financial
Officer, will participate in a panel discussion at Fox-Pitt, Kelton's
"Bermuda in Boston" Conference on Tuesday, September 19, 2006 at 1:30
p.m. (Eastern Time) at the Langham Hotel in Boston, Massachusetts.
A live webcast of the panel discussion will be made available
through the "Investor Relations" section of the company's website at
www.awac.com, with a replay of the webcast available on the company's
website through October 20, 2006. The presentation materials used
during the conference will also be available on the "Investor
Relations" section of the website through October 20, 2006.

About Allied World Assurance Company

Allied World Assurance Company Holdings, Ltd, founded in November
2001, is one of Bermuda's leading property and casualty insurers. The
company, through its operating subsidiaries, offers property and
casualty insurance and reinsurance on a worldwide basis. The principal
operating subsidiaries of Allied World Assurance Company Holdings, Ltd
have A (Excellent) ratings from A.M. Best Company and A- ratings from
Standard & Poor's. The company's Bermuda and U.S. operating
subsidiaries are rated A2 by Moody's Investors Service.