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By Katherine Burton and Sridhar Natarajan

July 30, 2026 at 11:35 AM EDT

Updated on July 30, 2026 at 1:57 PM EDT

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Ken Griffin’s Citadel bought a big chunk of the artificial-intelligence stocks held by Situational Awareness, the hedge fund led by former OpenAI researcher Leopold Aschenbrenner.

The fund has been liquidating public equities after losses in an AI stock rout in recent weeks, according to people familiar with the matter. Situational Awareness hasn’t disposed of all of its public stocks and still has private stakes including in Anthropic PBC, said one of the people, who asked not to be identified discussing confidential talks.

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