WASHINGTON, Oct 1 (Reuters) - Bank of America Merrill Lynch remained the top senior underwriter of U.S. municipal debt in the first nine months of 2014, with 262 deals totaling $28.77 billion, Thomson Reuters data released on Wednesday showed.
It held the same position in 2013.
California issued the most debt in the first three quarters of the year at $5.04 billion according to the data, followed by Puerto Rico at $3.5 billion.
Assured Guaranty insured the most municipal bonds, backing $7.4 billion debt, the data showed. (Reporting by Lisa Lambert, editing by G Crosse)