U.S. stock indexes opened lower on Thursday, with the Nasdaq diving more than 2 percent, as Facebook-owner Meta Platforms’ dour forecast jolted the broader tech sector and threatened to upend a nascent recovery in stock markets. The Dow Jones Industrial Average fell 109.2 points, or 0.31 percent, at the open to 35520.08. The S&P 500 fell 54.0 points, or 1.18 percent, at the open to 4535.41, while the Nasdaq Composite dropped 371.7 points, or 2.58 percent, to 14045.834 at the opening bell.