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A.M. Best Upgrades Issuer Credit Ratings of Allied World Assurance Company Holdings, AG and Its Subsidiaries

A.M. Best Co. has upgraded the issuer credit ratings (ICR) to “a+” from “a” and affirmed the financial strength rating (FSR) of A (Excellent) of Allied World Assurance Company, Ltd (Allied World) and its operating affiliates. The outlook for the ICRs has been revised to stable from positive, while the outlook for the FSR is stable.

A.M. Best also has assigned an FSR of A (Excellent) and an ICR of “a+” to Allied World’s reinsured subsidiary, Vantapro Specialty Insurance Company (headquartered in Farmington, CT). The outlook assigned to both ratings is stable.

Concurrently, A.M. Best has upgraded the ICRs to “bbb+” from “bbb” of the ultimate parent, Allied World Assurance Company Holdings, AG (AWH) (Switzerland) (NYSE:AWH), and its downstream holding company Allied World Assurance Company Holdings, Ltd (Allied World Holdings Bermuda). A.M. Best also has upgraded the debt ratings to “bbb+” from “bbb” of Allied World Holdings Bermuda. The outlook for these ratings has been revised to stable from positive. All the above companies are domiciled in Bermuda, unless otherwise specified. (See below for a detailed listing of the companies and debt ratings.)

Allied World is a property/casualty insurer/reinsurer with significant geographic reach. The ratings reflect its diversified mix of business, excellent risk-adjusted capitalization, experienced management team and comprehensive enterprise risk management framework. The stable outlook on the ratings reflects Allied World’s consistently strong operating performance, proven risk management culture and successful track record of expansion in terms of geography, products and distribution. These positive rating attributes have placed Allied World in a very strong position to successfully execute its business plans. The breadth of Allied World’s operations has been enhanced while it has delivered strong results over the long term.

Partially offsetting these positive rating factors is Allied World’s casualty orientation, as pricing for this class of business is cyclical and presently very competitive. The longer-tail nature of this business lends to greater uncertainty as regards to rate adequacy, which is exacerbated by the current low interest rate environment. Nonetheless, Allied World has chosen a targeted business strategy while taking steps to refine its cycle management capability. Allied World’s continued focus on casualty business also has helped to limit its exposure to the global catastrophes that have taken place over the past few years. Furthermore, Allied World appears to have a prudent reserving philosophy, maintaining a significant cushion of incurred but not reported reserves. This conservative reserving posture has enabled the company to consistently recognize favorable loss reserve development for several years, which has contributed to its strong operating returns through the current soft phase of the casualty market. Accordingly, the outlook is medium term in nature to allow more recent accident years to mature given the current soft pricing dynamics of the casualty market.

Factors that could lead to Allied World’s ratings being upgraded would be the continuation of long term, consistently strong operating profitability and maintaining excellent risk-adjusted capital levels commensurate with its ratings. If Allied World can sustain its historical results going forward, the company will have demonstrated that it has built a business model, which is well established to withstand varying market conditions and support a higher FSR.

Factors that could lead to the company’s ratings being downgraded and/or a negative outlook include unfavorable operating profitability trends, outsized insurance or investment losses, any future shortfall in reserves and a substantial decline in risk-adjusted capital that would not be supportive of the current rating level.

The ICRs have been upgraded to “a+” from “a” and the FSR of A (Excellent) has been affirmed for Allied World Assurance Company, Ltd and its following operating affiliates:

  • Allied World Assurance Company (U.S.) Inc.
  • Allied World National Assurance Company
  • Allied World Insurance Company
  • Allied World Assurance Company (Europe) Limited
  • Darwin National Assurance Company
  • Darwin Select Insurance Company

The following debt ratings have been upgraded:

Allied World Assurance Company Holdings, Ltd—
-- to “bbb+” from “bbb” on $300 million 5.5% senior unsecured notes, due 2020
-- to “bbb+” from “bbb” on $500 million 7.5% senior unsecured notes, due 2016 (all notes are unconditionally and irrevocably guaranteed by AWH)

The methodology used in determining these ratings is Best’s Credit Rating Methodology, which provides a comprehensive explanation of A.M. Best’s rating process and contains the different rating criteria employed in the rating process. Best’s Credit Rating Methodology can be found at

A.M. Best Company is the world's oldest and most authoritative insurance rating and information source. For more information, visit

Copyright © 2013 by A.M. Best Company, Inc. ALL RIGHTS RESERVED.


A.M. Best Co.
Gale Guerra, 908-439-2200, ext. 5069
Senior Financial Analyst
Robert DeRose, 908-439-2200, ext. 5453
Vice President
Rachelle Morrow, 908-439-2200, ext. 5378
Senior Manager, Public Relations
Jim Peavy, 908-439-2200, ext. 5644
Assistant Vice President, Public Relations

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