Data released Monday painted a mixed picture of the U.S. economy as retail sales rose less than expected, while growth in New York state's manufacturing sector accelerated in July. Citigroup Inc (NYSE: C) reported a stronger-than-expected rise in second-quarter earnings on the heels of JPMorgan Chase & Co. (NYSE: JPM) and Wells Fargo & Co (NYSE: WFC) beating Wall Street expectations in the previous session.