S&P 500 and Nasdaq Slide as AI Concerns Weigh on Equity Sentiment

Equity Markets Under Pressure Despite Lower Yields and Oil Prices

US equity indices continue to experience heightened selling pressure, as falling Treasury yields and declining crude oil prices have failed to restore investor appetite for risk assets. The Nasdaq 100 has entered correction territory, driven by cautious commentary from major technology firms and growing concerns regarding potential pullbacks in artificial intelligence data-center infrastructure spending following the US midterm elections.

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Lower Brent crude prices—triggered by reports of diplomatic developments between the United States and Iran—and declining US Treasury yields provided little relief to equity benchmarks. Instead, severe weakness across oil and gas equities amplified overall market losses, demonstrating a broader risk-off sentiment across Wall Street.

Mega-Cap Tech Weakness Drives Broad Market Divergence

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In October, the equal-weighted S&P 500 outperformed the traditional market-cap-weighted index at its fastest monthly pace since 2009. Defensive sectors, including consumer staples, energy, health care, and utilities, advanced by approximately 8%. Conversely, information technology and communication services declined by roughly 9%, underlining the heavy drag imposed by mega-cap technology names.

Earnings reports from sector leaders have highlighted mounting headwinds. Apple reported strong third-quarter headline figures, with revenue rising 12% year-over-year, gross margin reaching 47.9%, and net income totaling $30.71 billion—all exceeding consensus expectations. However, conservative guidance from management regarding a slowdown in shared-services revenue growth and narrowing gross margins triggered a sell-off in the stock, further weighing on the S&P 500 and Nasdaq 100.

Political Risks and Infrastructure Uncertainty

Market focus is increasingly shifting toward post-midterm political risks, particularly at the state regulatory level. Texas is currently projected to host approximately 25% of total US data-center capacity by 2030. Industry analysts warn that potential policy freezes or delays on major infrastructure projects by incoming state leadership could pose direct risks to AI-focused technology revenues.

While historical analysis from Barclays notes that the past three US midterm election cycles did not disrupt broader equity or bond markets, institutional views remain mixed. Analysts at Wolfe Research caution that traders expecting a typical post-election rebound may face disappointment, as persistent concerns surrounding AI capital expenditure could constrain sustained upward momentum.

S&P 500 Technical Outlook

From a technical perspective, the S&P 500 failed to clear resistance near the 7,645 level on the daily chart. The rejection at this key technical barrier confirmed strong selling interest, prompting an accumulation of short positions and reinforcing a bearish near-term bias for the index.

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