S&P 500, Nasdaq slide as Meta, Microsoft fall on AI spending concerns

S&P 500, Nasdaq Slip as Meta and Microsoft Stocks Stumble over AI Spending Plans

On Thursday, U.S. equity markets sank as investor jitters over heavy artificial intelligence (AI) capital expenditures by tech giants weighed on the indices. Meta Platforms and Microsoft, in particular, led the declines, triggering broad concern over whether current AI bets can deliver returns. 

Market Overview

The S&P 500 fell around 0.50%, and the Nasdaq Composite dropped approximately 1.14% on the day, reflecting the tech-led drag. 

Meanwhile, the Dow Jones managed a modest gain, as industrials and more defensive names offered some offset. 

The weakness was concentrated in big tech, with Meta plunging more than 10% and Microsoft dropping roughly 2–3% amid reports of soaring capital investments. 

Tech Giants Under Pressure

Meta’s Dramatic Drop

Meta’s stock tumbled after it flagged “notably larger” capital expenditures ahead, spurred by infrastructure investments in AI. The decline marked one of its steepest single-day losses in years. 

Meta is reportedly considering spending $70–72 billion on AI-related capital expenditure in 2025, with potential for further increases in 2026. 

Microsoft’s Bold Investments

Microsoft also came under scrutiny. The company disclosed that it spent nearly $34.9 billion in its latest quarter, marking record capex, and warned that such spending could rise further. 

The size and trajectory of Microsoft’s investments raise questions around capital return and efficiency, particularly in a more cautious market climate. 

What’s Driving Investor Concern?

1. Monetization Uncertainty

There is growing skepticism about whether AI infrastructure spending will generate returns commensurate with the costs. Without clear paths to monetization, the investments risk becoming sunk costs. 

2. Valuation Corrections

The heavy weighting of mega-cap tech in the S&P 500 means that cracks in just a few names can ripple across the market. 

3. Monetary Policy Ambiguity

The U.S. Federal Reserve’s latest signals dampened hopes for further rate cuts soon, which pulled forward discounting and tightened risk premium assumptions. 

4. Bubble Risks in AI Hype

Observers are raising warnings about whether the AI boom is entering speculative territory reminiscent of past tech bubbles. 

Wider Impacts & Market Outlook

Among other movers, Alphabet (Google’s parent) bucked the trend and posted gains, buoyed by stronger ad and cloud performance. 

Broader market breadth was negative, with more stocks declining than advancing across both the NYSE and Nasdaq. 

Looking ahead, market sentiment will likely hinge on successive earnings reports, clearer guidance on tech firms’ capital expenditure plans, and upcoming signals from the Fed on interest rates.

Conclusion

The sharp fall in Meta and Microsoft shares underscores growing investor anxiety over the high costs of developing artificial intelligence infrastructure. While AI remains a long-term growth driver, the immediate concern revolves around sustainability and returns. As markets await further earnings reports and guidance, volatility in the tech sector is likely to persist.