On January 21, 2026 (Tuesday, Eastern Time), the three major U.S. stock indices all closed in the red, a situation triggered by Trump's tariff threats and the sovereignty dispute over Greenland. The Dow Jones Industrial Average took a 1.76% hit, the Nasdaq Composite Index plummeted by 2.39%, and the S&P 500 Index dropped 2.06%.

The tech sector was not spared, with a broad - based downturn across the board. Nvidia's stock dipped 4.38%, Apple's shares fell 3.46%, Microsoft saw a 1.16% decline, Google's stock dropped 2.42%, Amazon's shares declined by 3.40%, Meta's stock went down 2.60%, and Tesla's stock plummeted 4.17%.

Popular Chinese concept stocks also generally experienced a downward trend, with the Nasdaq Golden Dragon China Index declining by 1.45%.

In terms of corporate developments, Netflix disclosed that its revenue for the fourth quarter reached $12.05 billion and projected its 2026 revenue to be in the range of $50.7 billion to $51.7 billion. However, its first - quarter performance outlook failed to meet market expectations. As a result, its stock dropped more than 5% in after - hours trading.

United Airlines reported adjusted earnings per share of $3.10 for the fourth quarter, and its stock surged more than 3% in after - hours trading.

In other business news, Goldman Sachs and the Qatar Investment Authority are set to establish a $25 billion investment partnership. Meanwhile, OpenAI has struck a deal with ServiceNow to integrate its AI models into business software.