Stocks open lower after back-to-back gains as investors brace for tech earnings

U.S. stocks opened lower Tuesday, pulling back after strong back-to-back gains led by the tech-heavy Nasdaq Composite. Investors were weighing results from corporate heavyweights, including General Electric
GE,
-0.29%
and Johnson & Johnson
JNJ,
-0.68%,
while Microsoft Corp.
MSFT,
+0.43%
was set to kick off earnings for megacap tech companies after the bell. The Dow Jones Industrial Average
DJIA,
-0.22%
was down 157 points, or 0.5%, while the S&P 500
SPX,
-0.24%
shed 0.5% and the Nasdaq Composite
COMP,
-0.11%
declined 0.6%.