美股股指期货涨势扩大，标普500指数期货涨1%，道指期货涨0.54%，纳指期货涨1.46%。

Core Viewpoint - U.S. stock index futures are experiencing significant gains, with the S&P 500 futures up by 1%, Dow futures up by 0.54%, and Nasdaq futures up by 1.46% [1] Group 1 - S&P 500 futures increased by 1% [1] - Dow futures rose by 0.54% [1] - Nasdaq futures saw a rise of 1.46% [1]