AI infrastructure spending has lifted US stock indexes to record highs, but the article argues that Trumpflation, inflation driven by President Trump's tariffs and the Iran war, is becoming entrenched. Annualized inflation rose to a multi-year high of 4.2% in May, prompting a rate hike on Sept. 16. A New York Fed study found tariffs had lifted goods price inflation by 2.9 percentage points by February 2026, while the disruption of about 20 million barrels of crude a day through the Strait of Hormuz sent diesel prices to records. Core inflation now suggests the Iran war is reshaping transport and supply chains, and FOMC policymakers in June flagged the costs of GPUs and HBM from the AI build-out as a new inflation source. That raises the risk of more aggressive rate hikes that could end the AI-driven rally.
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inflationFedtariffsoil pricesDonald TrumpAI investment
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Related tickers and likely impact
QQQ
▼ Likely negativeInvesco QQQ Trust
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/20/2026 | 717.63 |
| Change that session | -0.10% |
SPY
▼ Likely negativeSPDR S&P 500 ETF
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | ETF |
| Close on 10/20/2026 | 769.05 |
| Change that session | +0.34% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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