The Dow is up roughly 0.3%, versus a fall of 3.11% for the Nasdaq. If it holds, the Dow's 3.41 percentage point outperformance would be its strongest versus the Nasdaq since Nov. 9, 2020, according to Dow Jones Market Data, when the blue-chip gauge outpaced the tech-heavy index by 4.47 percentage points.

Not all big technology stocks got hit in the rout, however. Apple Inc., which gained 3.3% today, has overtaken Nvidia as the top company by market value. Meta Platforms Inc. also ended the day higher,

Some AI researchers hailed DeepSeek’s R1 as a breakthrough on the same level as DeepMind’s AlphaZero, a 2017 model that became superhuman at the board games Chess and Go by purely playing against itself and improving, rather than observing any human games.

A frenzy over an artificial intelligence chatbot made by Chinese tech startup DeepSeek was upending stock markets Monday and fueling debates over the economic and geopolitical competition between the U.

Tech stocks in the United States fell sharply on Monday (January 27) after Chinese AI company DeepSeek revealed a new AI model, R1, that operates at a fraction of the cost of existing American models.