U.S. stock indexes experienced a downturn with the Nasdaq 100 turning negative and the S&P 500 paring its gains to 0.1% before giving up its opening gain. This shift in market sentiment coincided with the Citi US Economic Surprise Index moving back into negative territory, reflecting weaker-than-expected economic data. The negative trend in stock indexes persisted as of June 5, 2025, indicating growing concerns about the U.S. economic outlook.