美国股市在下午延续抛售，疲软的经济数据和对通胀的担忧打压了投资者情绪。标准普尔500指数下跌1.7%，道琼斯指数暴跌800多点，纳斯达克100指数下跌2%。联合健康公司股价暴跌7%以上，此前有报道称司法部正在调查其医疗保险计费做法，使其成为道琼斯指数中表现最差的成分股。消费者信心也受到打击，密歇根大学的指数降至64.7，反映出对通货膨胀的担忧日益加剧，消费者现在预计通货膨胀率在未来一年将上升至4.3%。沃尔玛（-3%）警告称，由于关税的不确定性，价格可能上涨，这进一步打击了市场信心，导致周四市场整体低迷。虽然标准普尔500指数和纳斯达克指数仍有望周内上涨，但道琼斯指数正面临下跌，这表明经济不确定性加剧了波动性。

Stocks in the US extend sell-off in the afternoon session as weak economic data and concerns over inflation weighed on investor sentiment. The S&P 500 lost 1.7%, while the Dow Jones plunged over 800 points, and the Nasdaq 100 slipped 2%. UnitedHealth shares plunged more than 7% following reports that the Department of Justice is investigating its Medicare billing practices, making it the worst-performing Dow component. Consumer sentiment also took a hit, with the University of Michigan’s index falling to 64.7, reflecting growing concerns over inflation, which consumers now expect to rise to 4.3% in the coming year. Walmart’s (-3%) warning about potential price hikes due to tariff uncertainty further dampened market confidence, contributing to Thursday’s broader market downturn. While the S&P 500 and Nasdaq are still on track for weekly gains, the Dow is facing a loss, signaling increased volatility amid economic uncertainty.