Ambac Financial Group, Inc., headquartered in New York City, is a holding company whose affiliates provide financial guarantees and financial services to clients in both the public and private sectors around the world. Ambac's principal operating subsidiary, Ambac Assurance Corporation, a guarantor of public finance and structured finance obligations, has earned a Caa2 rating from Moody's Investors Service, Inc. with a developing outlook and a CC rating from Standard & Poor's Ratings Services with a developing outlook. Ambac Financial Group, Inc. common stock is listed on the New York Stock Exchange (ticker symbol ABK).