AI Stock Selloff: What It Means for the S&P 500

AI stocks finally hit turbulence. The kind that makes you grip the armrest and wonder if the pilot just banked too hard. The move didn’t stay in one corner of the market either. It spilled straight into the S&P 500, which had leaned heavily on AI all year for momentum.

So let’s cut through the noise. What actually cracked, what didn’t, and what it could mean for the next few months if you’re tracking the index or running money against it.

I’ll keep it plain: leadership concentrated in a handful of AI and chip names is great when they run. It’s a shock absorber in reverse when they all slip at once.

Point Details Index wobble on AI weakness The S&P 500 fell 64.87 points (‑0.86%) to 7,468.83 on July 17 as an AI and chip selloff broadened across sectors Reuters (via MarketScreener). Semis show the shock The PHLX Semiconductor Index (SOX) tumbled about 17% in July to that point, though it remained up roughly 63.2% year‑to‑date, underscoring volatile leadership Reuters (via MarketScreener). Volatility didn’t stop mid‑month On July 28, the SOX closed at 11,035.68, down 519.20 points (‑4.49%) on the day, showing continued late‑July pressure Nasdaq. Big Tech also took a hit Every member of the AI‑exposed “Magnificent Seven” slipped on July 17; Meta fell about 2.7% and Alphabet about 3.2% Reuters (via MarketScreener). Earnings support is still there Analysts aggregated by LSEG expected roughly 26% year‑on‑year S&P 500 earnings growth for Q2, a key backdrop to this year’s index strength Reuters (via MarketScreener, citing LSEG).

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