On January 29, 2026, the US stock market closed with mixed results. The Dow Jones Industrial Average rose by 0.08%, the S&P 500 increased by 0.18%, while the Nasdaq Composite fell by 0.12%.

In sector performance, US cruise stocks saw significant gains. Royal Caribbean Cruises surged 18.65%, Norwegian Cruise Line rose 10.25%, and Carnival increased by 8.46%. Conversely, the US solar energy sector experienced notable declines, with Las Vegas Sands dropping 13.96%.

Microsoft experienced a sharp decline of 9.99%, marking its largest single-day drop in nearly six years. The decline was driven by concerns over record AI spending, slowing cloud growth, and significant capital expenditures, which raised investor concerns about profit margins and future guidance.

Meta Platforms, Inc. saw a significant increase of 10.40% following the release of its strong Q4 2025 earnings report. The company reported revenue of $59.893 billion, a 24% year-over-year increase, and provided optimistic guidance for Q1 2026 and full-year capital expenditures, exceeding analyst expectations.

Apple rose by 0.68% after announcing the acquisition of Israeli audio AI startup Q.ai for nearly $2 billion. The acquisition aims to enhance Apple's AI audio technology, particularly in products like AirPods.

Amazon.com fell by 0.53% despite reports of the company being in talks to invest up to $50 billion in OpenAI, indicating a strategic move to deepen its involvement in the AI sector.

Tesla Motors declined by 3.45% as analysts adjusted their price targets and ratings. The company also announced a shift in focus towards robotics and xAI investment, which led to mixed reactions from investors.

ServiceNow dropped by 9.94% after multiple analysts lowered their price targets while maintaining positive ratings, reflecting a cautious but optimistic outlook on the company's stock performance.