Chip Stocks Fell 12% in One Day

The chip index fell 12% in one day.

The PHLX Semiconductor Index (SOX) closed down 12.25% at 9,011 on Thursday, November 5, 2026 — a drop of 1,257.52 points from Wednesday’s close of 10,268.65. The Nasdaq Composite fell 5.5% to 24,315, closing in correction territory more than 10% below its October 6 record, and the S&P 500 fell 4.3%, its steepest one-day drop since April 2025. The Dow lost 1,833 points, or 3.4%.

The storyline

Hook: The chip index fell 12% in one day.

Context: The PHLX Semiconductor Index closed down 12.25% at 9,011 on November 5, 2026, dragging the Nasdaq 5.5% into correction and the S&P 500 4.3% lower, its worst day since April.

Stakes: AMD and Micron each fell 17%, Nvidia 9%, SanDisk 22%. Qualcomm’s weak phone-chip sales started the slide, and investors fear a Democrat-controlled Congress may slow data-center building — even though September chip sales rose 146.8% in a year.

Payoff: Chips fell 12%, but sales stayed strong. Watch Friday’s jobs report for the next move — and send this to the one person who owns chip stocks.

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How we verified this
Closing levels were checked against two agreeing sources (Seeking Alpha’s SOX historical prices and market-close reporting): SOX 9,011.14, down 1,257.52 points (-12.25%); Nasdaq Composite -5.52% to 24,315.00; S&P 500 -4.35%; Dow -1,833 points (-3.44%). Individual stock moves are closing figures from the same market-close reporting (AMD -17.26%, Micron about -17%, Nvidia -9.26%, SanDisk -22.3%, Broadcom -10.43%, Intel -10.33%, Tesla -10.77%). The September chip-sales figure (+146.8% year over year) comes from the Semiconductor Industry Association / World Semiconductor Trade Statistics release of November 3, 2026. Context figures were recomputed from the reported closes: SOX still about 27% above its 2025 year-end close (7,083.13) and about 38% below its 52-week high close (14,634.72, June 22). The drivers — Qualcomm’s weak smartphone-chip sales and fears that a Democrat-controlled Congress may slow data-center building — are the causes named in the day’s reporting; the Friday October jobs report is due at 7:30 AM CT.

Links

• Instagram reel: https://www.instagram.com/p/DfYJmulAWyz/
• Sources:
  • Seeking Alpha, PHLX Semiconductor Index historical prices: https://seekingalpha.com/symbol/SOX/historical-price-quotes
  • PR Newswire / Morningstar, September chip sales up 146.8% year over year: https://www.prnewswire.com/news-releases/two-days-before-todays-selloff-data-put-global-september-chip-sales-up-146-8-year-to-year-302931037.html
  • Morningstar / PR Newswire, where chip charts stand after the slide: https://www.morningstar.com/news/pr-newswire/20261105ln90330/where-chip-charts-stand-after-todays-slide-and-what-their-latest-earnings-reports-said
  • InvestingLive, Nasdaq 100 worst day since 2020: https://investinglive.com/stocks/nasdaq-100-suffers-worst-day-since-2020/
  • Le Private Banker, S&P 500 plunges 4.3% as semiconductor index sinks 12%: https://leprivatebanker.com/2026/11/05/sp-500-plunges-4-3-in-worst-day-since-april-2025-as-semiconductor-index-sinks-12-pushing-nasdaq-into-correction/
  • The Retest, Nasdaq on track for a correction (Reuters reporting): https://theretest.com/brief/2026-11-05-breaking-nasdaq-correction
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