Check the company that becomes a headline news in front of the trading. Nvidia (Nvidia) -This’s share price of artificial intelligence darlings has plummeted more than 11%during the trading before the market, and it is expected to set the worst day since March 2020. Selling occurred. This moves people’s questioning of the fastest needs of Nvidia and its competitiveness. Other chip manufacturers have also fallen, of which Broadcom fell 12%and AMD fell 4%. Microsoft, Amazon -The news of DeepSeek has caused people to sell a large amount of funds invested by large technology companies in artificial intelligence models and data centers, and other large stocks are also sold sharply. Microsoft’s stock price fell 5%, Amazon’s stock price fell more than 4%, and Meta Platforms’s stock price fell 2.5%. Vertiv Holdings — With the reversal of the American artificial intelligence industry, the stock price of this data center service company fell 16%. If the emergence of Deepseek has caused future artificial intelligence infrastructure to be lower than expected, this may damage Vertiv’s business prospects. Contellation Energy, Vistra -Power suppliers of artificial intelligence infrastructure have also been severely hit, because people are worried that if Deepseek can use fewer chips to perform tasks, the energy required will be reduced. Contellation Energy, Vistra, NUSCALE POWER and OKLO all fell at least 10%in front of trading. AT & T -the fourth quarter of this telecommunications giant is higher than Wall Street expectations, and the stock price rises by 2.3%. The company’s earnings per share of 54 cents (excluding projects), which is 4 cents higher than the consensus predictions of analysts investigated by the Streetaccount investigation. AT & T also announced a revenue of $ 32.3 billion, while analysts expect to be US $ 320 billion. Dr Horton -Bank of America reduced the rating of this residential construction company from the purchase to neutral, and its stock price fell nearly 1%. The bank said that the “challenging” real estate market background and rising investment costs may put pressure on the company. – CNBC’s Alex Harring, Sean Conlon and Jesse Pound contribute reports.