4月23日电，美股股指期货涨幅扩大，其中纳指期货涨幅扩大至2%，标普股指期货涨1.8%。

Core Viewpoint - US stock index futures have seen significant gains, with Nasdaq futures rising by 2% and S&P futures increasing by 1.8% [1] Group 1 - Nasdaq futures have expanded their gains to 2% [1] - S&P stock index futures have increased by 1.8% [1]