On January 27, U.S. stock market indexes concluded the trading day with a mixed bag of performances. The Dow Jones Industrial Average eked out a modest gain of 0.65%, whereas the S&P 500 and Nasdaq Composite indices declined by 1.46% and 3.07%, respectively. The tech sector, particularly large-cap stocks, generally fared poorly. NVIDIA took a significant hit, plummeting by approximately 17%, which translated to a colossal loss of $589 billion in market value in a single day—marking the largest single-day evaporation of market value in history. Google slipped by more than 4%, while Tesla, Microsoft, and Intel also fell by more than 2%. Netflix, on the other hand, experienced a minor decline. In contrast, Apple's share price surged by more than 3%, reaffirming its status as the world's most valuable publicly traded company. Meta climbed by over 1%, and Amazon also registered a slight increase. Among popular Chinese concept stocks, the majority trended upwards. Futu Holdings declined by more than 3%, while NetEase and JD.com saw minor dips. 36Kr and New Oriental posted gains of over 3%, TAL Education, Xpeng Motors, and Baidu rose by more than 2%. Tencent Music and Li Auto gained more than 1%, and Alibaba and Bilibili also witnessed slight increases.