NEW YORK (AP) — Drops for Nvidia, Tesla and other former superstars dragged Wall Street lower on Wednesday.

The S&P 500 sank 1.1% to break what had been a run of calmer trading. The Dow Jones Industrial Average swung from a gain of 230 points in the morning to a loss of 132 points, or 0.3%, while the weakness for Big Tech sent the Nasdaq composite to a market-leading drop of 2%.

The group of dominant stocks known as the “Magnificent Seven” has been at the center of the U.S. stock market’s recent sell-off, which earlier this month took the S&P 500 10% below its all-time high for its first “correction” since 2023. Big Tech had rocketed in earlier years amid a frenzy around artificial-intelligence technology, and critics said their prices rose too quickly compared with their already rapidly growing profits.

Nvidia fell 6% to bring its loss for the young year so far to 15.5%. It was the single heaviest weight on the S&P 500 by far.

Other AI-related stocks were also weak, including server-builder Super Micro Computer, which fell 8.9%, and power companies hoping to electrify AI data centers.

Tesla has been contending with additional challenges, including worries that political anger at its CEO, Elon Musk, will hurt the electric-vehicle maker’s sales. Tesla dropped 5.6% to extend its loss for 2025 to 32.6%.

The U.S. stock market had been steadying somewhat following its drop into a correction, with a three-day winning streak running through Tuesday. But strategists along Wall Street have warned the sharp swings likely aren’t over yet, with a suite of U.S. tariffs scheduled to arrive next week. Even if those end up less painful for the global economy than feared, all the talk about tariffs has already soured confidence among U.S. consumers and companies.