U.S. stocks open higher as investors weigh Wall Street bank earnings

U.S. stocks opened higher Friday, with the S&P 500 edging up after on Thursday crossing the 4,500 mark for the first time in about 15 months, as investors weighed second-quarter earnings from major Wall Street banks. The Dow Jones Industrial Average
DJIA,
+0.41%
was up 0.5% soon after the opening bell, while the S&P 500
SPX,
+0.22%
rose 0.2% and the Nasdaq Composite
COMP,
+0.32%
gained 0.2%, according to FactSet data, at last check. On Friday, JPMorgan Chase & Co.
JPM,
+1.44%,
Wells Fargo & Co.
WFC,
+0.80%
and Citigroup Inc.
C,
-1.74%
all reported stronger-than-expected quarterly profits.