美股三大指数集体高开，安德玛跌超20%

Market Overview - The three major U.S. stock indices opened higher, with the Dow Jones Industrial Average up by 0.28%, the Nasdaq up by 0.35%, and the S&P 500 up by 0.32% [1] Company Performance - Under Armour experienced a significant decline, falling over 20% [1] - Ninth City, a cryptocurrency concept stock, saw an increase of over 4% [1] - Novo Nordisk's stock rose by more than 3% [1]