BlockBeats News, April 7th, U.S. stock market opening, the three major stock indexes opened sharply lower, with the Dow Jones falling by 2.8%, the S&P 500 Index falling by 3.3%, and the Nasdaq falling by 3.9%. Tech stocks experienced a heavy sell-off, with Tesla (TSLA.O) falling by 6.7% and Nvidia (NVDA.O) falling by about 7%.