By Al Yoon Three Wall Street dealers purchased $5.2 billion of complex residential mortgage debt securities from a Federal Reserve Bank of New York portfolio Friday, marking the latest bulk sale of assets taken on during the bailout of American International Group Inc. (AIG) in 2008, according to the New York Fed's website. Credit Suisse Group AG (CS, CSGN.VX) won bidding on three collateralized debt obligations for a total $2.83 billion, while Citigroup Inc. (C) bought another $1.44 billion in a single CDO. Bank of America Corp.'s (BAC) Bank of America Merrill Lynch unit purchased one CDO with a face value of $896 million. The sales will likely boost profit for the public as the New York Fed announced Thursday it has already been repaid on $53 billion in loans made to orchestrate crisis-era interventions of AIG and Bear Stearns. The loans were used to create portfolios known as Maiden Lane and Maiden Lane III, with the latter the source of CDOs sold Friday. Friday's auctions increase sales from Maiden Lane III this year to about $19 billion. It has also sold $20 billion of residential mortgage bonds as it wound down its Maiden Lane II portfolio of assets related to the AIG bailout, resulting in a $2.8 billion gain for taxpayers. Write to Al Yoon at albert.yoon@dowjones.com
