[U.S. Stock Market's Three Major Indexes Open Lower] Jin10 Data, December 3 – At the opening of the U.S. stock market, the three major indexes fell. The Dow Jones Industrial Average dropped 0.05%, the S&P 500 Index fell 0.23%, and the Nasdaq Composite Index declined 0.4%. Microsoft (MSFT.O) fell 2.8% as it lowered AI software sales targets due to lukewarm customer response. Marvell Technology (MRVL.O) rose more than 7% as the company announced it would acquire Celestial AI for up to $5.5 billion.