MBIA Inc. is a financial guarantee insurance company that operates through two main insurance subsidiaries and a corporate segment. National Public Finance Guarantee Corporation provides financial guarantees on municipal bonds and public finance obligations issued by U.S. governments, utilities, airports, healthcare institutions, and similar entities, while MBIA Insurance Corporation guarantees non-U.S. public finance obligations and structured finance instruments including sovereign bonds, infrastructure projects, and asset-backed securities. The company generates revenue from scheduled and refunding premiums earned on its in-force policy portfolio, net investment income from its invested capital, realized gains or losses on securities, and fees from policy servicing activities. Rather than seeking premium growth, the business focuses on managing its existing insured portfolio through surveillance, remediation, and claims management while maintaining substantial capital reserves to satisfy policyholder claims and support loss recovery efforts.