The transaction, which closed on Wednesday, includes AIG's rights to the Dow Jones-AIG Commodity Index.
Under terms of the agreement, UBS paid $15 million and will pay up to $135 million over the next 18 months based on future earnings of the purchased business.
The deal, which was announced in January, is part of the New York-based insurance giant's restructuring plans. It is the 10th transaction AIG has closed and one of 11 asset sale agreements it has reached in the past few months.