Gains in megacap tech stocks lifted U.S. indexes Monday, overcoming headwinds from another flare-up in trade tensions.

Buoyed by the likes of Meta Platforms, which rose 3.6%, and Nvidia, which climbed 1.7%, the S&P 500 ticked up 0.4%. The tech-heavy Nasdaq Composite added 0.7%, while the Dow Jones Industrial Average edged up 0.1%.