Summarize:

The Dow Jones Industrial Average crept up by 18.15 points to 17,926.43.
The S&P 500 rose 0.36 points to 2,082.78, while the tech-heavy Nasdaq fell 1.53 to 4,945.89.
Bank of America and Wells Fargo reported earnings Thursday morning. Both set aside cash to cover exposure to the energy industry.
Shares in Bank of America gained 2.5%, despite reporting a 18% drop in profit from a year earlier.
Wells Fargo shares fell 0.5% and JP Morgan shares rose 1.3%. It reported a 6.7% drop in first quarter profits on Wednesday.
Petroleum firm Exxon Mobil shares rose 0.7%.
Delta Airlines rose 1% after the company reported its earnings.  The airline's revenue was boosted by falling oil prices.

Summary:
(Close): Wall Street markets were mostly unchanged on Thursday as banks reported declines in profits, but beat analysts earnings estimates.