Citadel founder Ken Griffin told Bloomberg at Citadel's Future of Global Markets conference that there are almost certainly bubbles within the current AI boom. He compared GPUs to airline seats, warning that once capacity exceeds demand prices may collapse, similar to the fiber-optic bust around 2000. Yet Citadel's amended 13F for Q2 2026 showed about $8.6 billion in five AI-linked companies, with Amazon its second-largest holding; its Amazon and Microsoft share counts rose 34% and 43%, while Nvidia shares fell about 37%. The filing also disclosed options on Nvidia and Micron that may hedge risk, and it is only a snapshot as of June 30.
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artificial intelligenceasset bubblesCitadel
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Related tickers and likely impact
MSFT
• NeutralMicrosoft
Relevance: low
| Market | US stocks |
|---|---|
| Sector | Information Technology |
| Industry | Systems Software |
| Market cap | $4.0T |
| Close on 10/21/2026 | 532.81 |
| Change that session | +0.18% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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