Nasdaq and S&P 500 Post Worst Session Since June on AI Spending Fears
Tech stocks led a broad market selloff as investors grew uneasy over mounting artificial intelligence infrastructure costs.
U.S. equity markets suffered their steepest single-day losses in more than two months Wednesday, with the Nasdaq composite and the S&P 500 each recording their worst performance since June as concerns mounted over the scale of artificial intelligence infrastructure spending across major technology companies.
The selloff reflected growing investor unease about whether the enormous capital outlays being directed toward AI data centers, chips, and related buildout will translate into returns commensurate with the costs. That anxiety has periodically rattled tech-heavy indexes throughout the year, and the latest decline suggests the uncertainty has not abated.
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Both benchmarks bore the brunt of the pressure, with the broader S&P 500 dragged down by the outsized weighting of large-cap technology names that have been among the primary drivers of this year's earlier rally. The Nasdaq, which skews more heavily toward technology and growth stocks, was particularly exposed to the rotation in sentiment.
Market analysts have noted that questions surrounding AI monetization are becoming a more persistent source of volatility rather than an isolated event, as quarterly earnings seasons force companies to justify their capital expenditure forecasts to skeptical shareholders. The day's losses serve as a reminder that the AI-driven momentum underpinning much of the 2024 market advance carries significant two-sided risk.
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