Build America Mutual Assurance Company (stylized as Build America Mutual or BAM) is a mutual, monoline bond insurer of essential public-purpose U.S. municipal bonds. Since its inception in July 2012, the company has insured more than $65 billion in par amount for more than 3,300 member-issuers. In 2018, it insured $8.36 billion par across 653 new-issue insured transactions. BAM also publishes a credit profile for every transaction it insures and updates them. More than 6,000 are now available. The company is the preferred provider of financial guaranty insurance on debt for member municipalities of the National League of Cities. NLC endorsed BAM upon its launch.