S&P 500 Gains and Losses Today: Nvidia Leads Chip, AI Stocks Lower

Major U.S. equities indexes lost ground Thursday as investors digested new tariff announcements and Nvidia (NVDA) led semiconductor and AI stocks lower.

President Donald Trump announced tariffs on products from Canada and Mexico starting next week, along with additional tariffs on China. Meanwhile, Nvidia shares dropped 8.5% as investors appeared unimpressed with the chipmaker’s solid earnings and outlook. 

The S&P 500 fell 1.6% as the benchmark index continued to struggle in February, on the verge of putting up a losing month. The Nasdaq fell 2.8% on tech weakness while the Dow Jones Industrial Average gave up intraday gains to finish 0.5% lower.

Teleflex (TFX) shares plummeted 21.7% to lead the S&P 500 lower after the medical device maker announced plans to split itself into two companies. 

Super Micro Computer (SMCI) fell 16% to return some of its recent gains as the server maker declined on reports that two of the company’s officers had filed to sell shares in the company. It follows the firm’s belated filing of its annual report. 

Viatris (VTRS) stock fell 15.2% after the pharmaceutical firm issued weaker-than-expected earnings and a disappointing outlook. The company said that regulatory action associated with an overseas production facility had cut into quarterly profits. 

Shares of Vistra Corp. (VST) fell 12.3% despite better-than-expected earnings. The Texas-based energy provider has seen demand for its nuclear power increase on power needs for new AI data centers. Its decline came as other stocks expected to benefit from demand for AI lost ground.

Invitation Homes (INVH) stock rose by 5.5% after the real estate investment trust reported quarterly revenue and net income that beat analyst estimates. The company that focuses on leasing single-family homes reported higher same-store net income. 

Warner Bros. Discovery (WBD) shares gained 4.7% after the company reported weaker-than-expected earnings, but delivered an upbeat streaming outlook.  The entertainment giant laid out an expansion plan that will see its Max streaming service reach more countries on its path to acquiring at least 150 million global subscribers by the end of 2026.

Shares of Allstate (ALL) rose 3.5% after its announcement that it would raise its dividend to $1 per share and commence a $1.5 billion share buyback program. 

Universal Health Services (UHS) rose 3.3% after it reported better-than-expected earnings and a revenue outlook that pushed past estimates. The hospital operator reported continued growth in admissions and higher patient days, those expenses were also higher.