NEW YORK ( TheStreet) -- Bank of America ( BAC) is the top underwriter of US IPOs so far in 2009, providing the latest evidence of the success of its investment banking unit following its acquisition of Merrill Lynch at the start of the year. BofA has helped companies raise $4.4 billion in 17 IPOs this year through Tuesday, according to data provider Dealogic. Goldman Sachs ( GS) was second, serving as underwriter for companies raising a total $3.3 billion in 12 deals, while third place went to Morgan Stanley ( MS), which was part of 17 deals, but only raised $2.8 billion. BofA was in fourth place at the same point last year, with just seven deals to its credit. On a standalone basis, Merrill Lynch was in second place at this time last year, participating in 12 deals that raised a total of $4.37 billion.