Citi, which ranked fourth among underwriters in the first quarter of 2011, handled 165 deals totaling nearly $15.3 billion to take the top spot, followed by J.P. Morgan Securities
Illinois remained the top issuer of muni debt so far this year after it sold $3.7 billion of taxable pension bonds in February, the data showed. The New York City Transitional Finance Authority was the second biggest issuer with nearly $2.7 billion of debt sold in six deals.
Total issuance of $114.7 billion in the first six months of the year marked a 43.8 percent slump from the same period in 2010. However, second-quarter issuance of $68 billion was up 18.6 percent over the first-quarter total of $46.7 billion, Thomson Reuters reported.
(Reporting by Karen Pierog, editing by Gary Crosse)