Citigroup beats estimates on credit card, trading revenue growth

(Reuters) - Citigroup Inc beat analysts' estimates for fourth-quarter profit on Tuesday, boosted by growth in its credit card business and a jump in trading revenue.North American branded cards, which account for a majority of the bank's consumer banking revenue, clocked double-digit revenue growth for the second straight quarter, rising 10% from a year earlier. The third-largest U.S. bank by assets has been leveraging its robust card business to help grow deposits by pitching checking and..