Ambac Financial Group, Inc. is a financial services holding company, which provides financial guarantee to public and private sectors. It operates through the Financial Guarantee and Financial Services business segments. The Financial Guarantee segment provides financial guarantees for public finance, structured finance, and international obligations. The Financial Services segment offers investment agreements, funding conduits, interest rate, and currency swaps to clients of the financial guarantee business. The company was founded on April 29, 1991 and is headquartered in New York, NY.