US Stock Indices Open Lower; Nvidia Rises 2.3%

US stock indices opened lower on September 28, with the Dow Jones falling 0.64%, the S&P 500 down 0.43%, and the Nasdaq down 0.47%. Nvidia (NVDA) rose 2.3% after announcing a $150 billion share buyback authorization. Meta Platforms (META) fell 0.9%, and SpaceX (SPCX) remained relatively flat as its Starship reached orbit.