Handful of tech stocks drive diverging measures of S&P 500 performance 标普500指数今年迄今的上涨由少数科技股推动
Equal weight version of index slips into negative territory even though benchmark is up 9.5 per cent this year 在AI浪潮的推动下，英伟达等科技企业今年总共增加了3.1万亿美元的市值。如果不考虑它们的贡献，标普500指数的市值今年迄今已减少2860亿美元。