U.S. stock indexes opened lower on Thursday as disappointing results from Tesla, AT&T and some regional banks dented investor sentiment already soured by prospects of further U.S. interest rate hikes.

The Dow Jones Industrial Average fell 156.41 points, or 0.46 percent, at the open to 33,740.60. The S&P 500 opened lower by 24.04 points, or 0.58 percent, at 4,130.48, while the Nasdaq Composite dropped 118.15 points, or 0.97 percent, to 12,039.08 at the opening bell.