美股盘初：纳指涨0.5% 诺和诺德跌约22%

Group 1 - The Dow Jones Industrial Average rose by 0.1%, and the S&P 500 index increased by 0.3% [2] - Novo Nordisk's stock fell approximately 22% after the company appointed a new CEO and lowered its full-year guidance, citing underwhelming sales of the weight loss drug Wegovy [2] - Boeing's stock increased by about 1% due to strong commercial aircraft deliveries, with Q2 revenue growing by 35% year-over-year, and net loss narrowing to $610 million [2] - Spotify's stock declined by around 7% as the company's Q2 revenue fell short of expectations [2]