Summary
At the October 27, 2026 close in US trading, the three major indices finished higher (Nasdaq +1.18% to 26,477.81) and AI chip stocks broadly advanced: AMD closed +5.45% at $560.26, and the Philadelphia Semiconductor Index rose 3.6% with all components up for a second straight day.
Background and Data Scope
- Event: On October 27, 2026 US Eastern time, the three major indices closed higher as the AI rebound sparked by Anthropic's prospectus extended into a second day; the Federal Reserve's two-day policy meeting opened the same day.
- Sources: Index levels per China News Service/Sina Finance; individual closing prices and changes per the 21st Century Business Herald US market recap.
- Scope: Closing prices are in US dollars; market caps are closing-time totals. LSEG data shows 83% of S&P 500 companies that have reported Q3 results beat expectations.
Core Data Table
| model | company | close (USD) | change | points change | market cap |
|---|---|---|---|---|---|
| AMD | Advanced Micro Devices | 560.26 | +5.45% | +28.98 | $914.6 billion |
| AVGO | Broadcom | 342.33 | +4.00% | +13.16 | $1.6 trillion |
| ARM | Arm Holdings | 226.6 | +1.46% | +3.25 | $242 billion |
| NVDA | NVIDIA | 217.94 | +0.90% | +1.94 | $5.3 trillion |
| DJIA | Dow Jones Industrial Average | 52,377.57 (pts) | +0.03% | +15.99 | — |
| IXIC | Nasdaq Composite | 26,477.81 (pts) | +1.18% | +308.43 | — |
| SPX | S&P 500 | 7,722.60 (pts) | +0.60% | +45.83 | — |
| SOX | Philadelphia Semiconductor Index | — | +3.6% | — | all components up for a second day |
Sector Supplementary Data (per China News Service)
- Mega-cap tech: Tesla +4.04%, Amazon +1.61%, Apple +0.93%, Alphabet +1.19%, Microsoft -0.24%, Meta -1.64%.
- Semiconductors: Intel +3.61%, Qualcomm +2.54%, TSMC ADR +2.95%, ASML +2.94%.
- Memory: Western Digital +6.95%, Micron +2.77%, SanDisk +3.92%, Seagate +3.67%, SK hynix GDR +1.92%.