Stock market today: S&P 500 falls as job cuts stoke economic fears, tech stutters

U.S. equities, including the S&P 500 and NASDAQ, declined significantly as record job cuts, reaching a 22-year monthly high, intensified economic fears, while valuation concerns triggered a sell-off in AI-related tech stocks like Nvidia. Corporate earnings presented a mixed picture, with Qualcomm slipping on future business outlook despite current beats, contrasting with gains in Arm Holdings, Snap, and Lyft. Concurrently, the Supreme Court began reviewing the legality of Trump-era tariffs, a decision that could reshape presidential trade authority and impact U.S.-China relations.

Analysis

The S&P 500 declined 1.1% as significant job cuts, reaching a 22-year monthly high and totaling 1.1 million year-to-date, fueled broader economic fears. This bearish sentiment was exacerbated by a tech sector sell-off, particularly in AI-related names like Nvidia, which fell over 4% amid renewed valuation concerns. Major companies including Amazon and UPS have contributed to the rising layoff figures.

Within the tech sector, performance was bifurcated: while AI leaders like Palantir, Dell, and AMD saw sharp declines, several firms posted strong results. Arm Holdings gained on an upbeat fiscal third-quarter outlook driven by AI spending, and Snap surged after beating revenue estimates and narrowing its net loss. Similarly, Lyft returned to profitability, and Datadog exceeded expectations with strong revenue growth and a raised outlook. Qualcomm, however, slipped due to concerns over potential future business loss from Samsung, overshadowing current-quarter beats.

Further market uncertainty stems from the Supreme Court's review of Trump-era tariffs, specifically the use of the 1977 International Emergency Economic Powers Act. This legal challenge could significantly reshape presidential trade powers and carries major implications for U.S.-China relations and global market stability. The potential M&A activity, such as SoftBank's reported interest in Marvell Technology, also adds a layer of corporate strategy to monitor.

Key Decisions for Investors

• Investors should consider defensive positioning given the significant increase in job cuts and associated economic fears, monitoring labor market data for further deterioration.
• Evaluate tech sector exposure carefully, differentiating between highly valued AI names facing profit-taking and companies demonstrating strong earnings and positive outlooks like Arm Holdings, Snap, and Datadog.
• Monitor the Supreme Court's decision on Trump-era tariffs, as its outcome could introduce significant volatility in trade-sensitive sectors and impact U.S.-China relations.
• Assess individual company fundamentals, particularly in the semiconductor space, where potential M&A (e.g., Marvell/SoftBank) and supply chain shifts (e.g., Qualcomm/Samsung) could drive stock performance.