U.S. stock market opens, S&P 500 index rises 0.15%

[U.S. stock market opens, S&P 500 index rises 0.15%] U.S. stock market opens, Dow Jones rises 0.11%, S&P 500 index rises 0.15%, Nasdaq rises 0.1%. Bank of America ( BAC .N) rises 4.2%, Q1 net profit increases 11% year-on-year, net interest and stock trading income both exceed expectations, Citigroup ( C.N) rises 1.4%, Q1 revenue increases 3% year-on-year, all five business lines show comprehensive growth. Netflix ( NFLX.O) rises nearly 2%.