U.S. stocks opened lower, with the Dow Jones Industrial Average down 96 points, the S&P 500 down 0.37%, and the Nasdaq down 0.5%. Google A (GOOGL.O) rose 3.3% after Warren Buffett made his first investment in the company. Novo Nordisk (NVO.N) fell 0.7%, and Eli Lilly (LLY.N) fell 2.6%, after Novo Nordisk lowered the price of its weight-loss drug. XPeng Motors (XPEV.N) fell 3.6% after its earnings report.