S&P 500 Drops 0.46% to 7,765; Crude Jumps 3.6%, Nasdaq Off 1.24%

For markets participants, Thursday's tape was a warning that the Federal Reserve's inflation battle isn't over: WTI's 3.6% jump lifted energy costs, pulled Treasury yields higher, and hit rate-sensitive tech hardest. With Q3 earnings days away, investors must weigh record index levels against a commodity-driven inflation resurgence.

U.S. equities ended lower on Thursday, October 8, 2026, as an oil supply shock collided with a selloff in the year's best-performing technology group. According to preliminary data, the S&P 500 lost 36.07 points, or 0.46%, to close at 7,765.70, while the Nasdaq Composite dropped 341.59 points, or 1.24%, to 27,197.10. The Dow Jones Industrial Average eked out a gain of 45.68 points, or 0.09%, to 51,225.48. The divergence between the Dow and the Nasdaq was telling: investors rotated away from high-valuation growth stocks and toward more defensive, dividend-heavy names as the macro backdrop darkened.

“

According to preliminary data, the S&P 500 lost 36.07 points, or 0.46%, to close at 7,765.70, while the Nasdaq Composite dropped 341.59 points, or 1.24%, to 27,197.10.

Crude oil was the primary macro driver. Front-month WTI settled up 3.6% and Brent gained 4.1% after a spate of attacks on shipping in the Strait of Hormuz and hurricane-related cuts in U.S. output reignited supply fears. The conflict in Iran has kept global crude supplies tight, and U.S. crude has now surged more than 60% year-to-date. That energy price impulse is feeding directly into inflation expectations. The Federal Reserve, which in September hiked interest rates for the first time since July 2023, now faces a more complicated calculus. During Thursday's session, benchmark U.S. Treasury yields hovered near multi-year highs, while the 2-year note—the tenor most sensitive to Fed policy—moved up more decisively. Financial markets still expect the central bank to leave rates unchanged at its upcoming meeting, but the oil shock makes a pause less comfortable.

The Nasdaq's outsized decline was also driven by semiconductor stocks, which have been the linchpin of the 2026 equity rally. Chipmakers entered the day up more than 80% year-to-date, but they were clear underperformers following a Financial Times report that OpenAI's annualized revenues were $20 billion less than the company had previously signaled. The report raised fresh questions about the revenue trajectory of artificial-intelligence leaders and their suppliers, hitting the entire chip ecosystem. The Nasdaq closed with its steepest percentage loss two days after reaching a record closing high, a reversal that underscores how crowded and sentiment-driven the AI trade has become.

The broader tape reflected a market in a holding pattern. Terry Sandven, chief equity strategist at U.S. Bank Wealth Management, noted that the market is going sideways ahead of third-quarter earnings season, which begins next week, while the conflict in Iran pushes oil prices higher. He added that despite Thursday's dip, the year-to-date path of least resistance for equities has been up. That framing is important: even with the pullback, equities remain near historical highs, and investors have repeatedly bought dips in 2026. The question now is whether that pattern survives a renewed inflation scare.