The Dow Jones Industrial Average rallied over 600 points on Tuesday, July 28, 2026, as investors rotated out of semiconductor stocks and into other sectors buoyed by strong corporate earnings and falling oil prices.
The Dow rose 658 points, or 1.3%, according to market reports, while the PHLX Semiconductor Index plummeted nearly 6% the same day. Specific chip stocks suffered steep declines: Marvell fell 16%, Micron dropped 13%, Intel and AMD each fell 11%, and Broadcom lost between 7% and 13%.
The semiconductor selloff has been relentless throughout July. The PHLX Semiconductor Index has tumbled 22.6% for the month, putting it on track for its biggest monthly decline since a prior 33.6% drop, according to MarketWatch. SK Hynix, which completed a record U.S. listing earlier this month, fell 14.5%, deepening concerns about the durability of the AI investment cycle that has driven chip stock valuations higher.
The broader rotation reflects a shift in investor sentiment. While semiconductor stocks have led the market’s AI-driven rally for months, concerns about elevated valuations and whether earnings can justify current prices have sparked profit-taking. Software and other technology sectors, which had lagged during the chip boom, benefited from Tuesday’s rebalancing as money flowed out of memory-chip and chipmaker names.
Strong earnings from non-semiconductor companies and a decline in crude oil prices added fuel to the Dow’s advance. The index, which is weighted toward industrial, financial, and consumer-staple companies less exposed to chip sector volatility, outperformed the tech-heavy Nasdaq, which declined as the chip selloff deepened.
This rotation echoes a broader pattern in 2026, where investors have repeatedly shifted between growth and value, and between mega-cap technology names and other sectors. The semiconductor sector’s peak-valuation concerns and questions about whether the AI cycle can sustain current price levels have made it vulnerable to sharp reversals when earnings disappoint or when investors seek to lock in gains elsewhere.
Sources
- Wall Street Journal — Dow rally and PHLX Semiconductor Index decline on July 28, 2026
- Barron’s — Dow up 658 points, chip stocks decline, software and Mag 7 ETFs rally
- CNBC — Dow rally buoyed by strong earnings, falling oil prices, and rotation out of semiconductors
- Reuters — U.S. stocks rebound ahead of Fed decision and tech earnings releases
- MarketWatch — PHLX Semiconductor Index down 22.6% in July, biggest monthly decline since 33.6% prior drop
- 247wallst.com — SK Hynix 14.5% drop, concerns about AI investment cycle durability
