Ambac

The Ambac Financial Group, Inc., generally known as Ambac (originally the American Municipal Bond Assurance Corporation), is an American holding company. Its subsidiaries provide financial guarantee products such as bond insurance and other financial services to clients in both the public and private sectors around the world. Its common stock and common stock purchase warrants are listed on the Nasdaq stock market under the symbols AMBC and AMBCW respectively. Ambac is regulated by the insurance commission of Wisconsin. Through its financial services subsidiaries, the company provides investment agreements, interest rate swaps, investment advisory and cash management services, primarily to states, municipalities and their authorities. It has its headquarters in Lower Manhattan, New York City.