Brent crude rose 2.6% to $111.66 a barrel, its highest in five months, as AI-linked stocks slid and pulled the Nasdaq down 1.5% and the S&P 500 down 0.8% by mid-morning in New York. Asian markets also fell sharply, with South Korea's Kospi down 3.52%, Japan's Nikkei 225 down 2.65% and Hong Kong's Hang Seng down 3.03%, while China's CSI 300 entered a bear market. Nvidia fell 2.3% and Meta dropped 5.8% after its profit missed forecasts. The 10-year Treasury yield rose to 5.03% from 3.97% before the Iran war, ahead of the Fed's Oct. 28 decision. Citadel founder Ken Griffin said investors are 'almost certainly' in an AI bubble, though he did not tell them to sell.
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Related tickers and likely impact
SPY
▼ Likely negativeSPDR S&P 500 ETF
Relevance: high
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/21/2026 | 773.13 |
| Change that session | +0.53% |
NVDA
▼ Likely negativeNvidia
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | Information Technology |
| Industry | Semiconductors |
| Market cap | $5.2T |
| Close on 10/21/2026 | 221.87 |
| Change that session | +2.49% |
QQQ
▼ Likely negativeInvesco QQQ Trust
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/21/2026 | 725.21 |
| Change that session | +1.06% |
VNINDEX
▼ Likely negativeRelevance: low
| Market | Vietnam stocks |
|---|---|
| Close on 10/22/2026 | 1,760.63 |
| Change that session | +1.26% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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Asian shares and U.S. futures fell Thursday after a Wall Street rally driven by strong profit reports from SpaceX and Capital One Financial. Japan's Nikkei 225 dropped 1.6% to 63,595.58 and South Korea's Kospi fell 2.6% to 5,586.89, with chipmakers Samsung Electronics and SK Hynix leading the losses. AI stocks came under pressure over concerns that data center construction could slow as borrowing costs rise. The previous day, the S&P 500 gained 0.6% and SpaceX jumped 7.8%, while Netflix fell 5.3% despite beating profit forecasts. Brent crude rose 1.6% to $110.55 a barrel, and the 10-year Treasury yield climbed to 5.12%.
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