U.S. main stock indexes opened lower on Friday, with megacap growth companies under pressure after Treasury yields extended gains, while shares of Lyft plunged as the ride-hailing firm forecast current-quarter profit well below estimates.

The Dow Jones Industrial Average fell 28.34 points, or 0.08 percent, at the open to 33,671.54.

The S&P 500 opened lower by 12.58 points, or 0.31 percent, at 4,068.92, while the Nasdaq Composite dropped 74.98 points, or 0.64 percent, to 11,714.60 at the opening bell.