5月1日电，美股股指期货涨势扩大，标普500指数期货涨1%，道指期货涨0.59%，纳指期货涨1.5%。

Core Viewpoint - US stock index futures are experiencing significant gains, with the S&P 500 futures up by 1%, Dow futures up by 0.59%, and Nasdaq futures up by 1.5% [1] Group 1 - S&P 500 futures increased by 1% [1] - Dow futures rose by 0.59% [1] - Nasdaq futures saw a rise of 1.5% [1]