Ambac Financial Group, Inc. ("Ambac"), headquartered in New York City, is a financial services holding company. Ambac's subsi ... diaries include: Ambac Assurance Corporation and Ambac Assurance UK Limited, financial guarantee insurance companies currently in runoff; Everspan Indemnity Insurance Company and Everspan Insurance Company (d/b/a Everspan Financial Guarantee Corp. in certain jurisdictions), specialty property & casualty program insurers; and Xchange Benefits, LLC and Xchange Affinity Underwriting Agency, LLC, property & casualty Managing General Underwriters. Ambac Financial Group Inc.'s common stock trades on the New York Stock Exchange under the symbol “AMBC”. read more