Citadel Acquires AI Stock Holdings from Situational Awareness
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Citadel Acquires AI Stock Holdings from Situational Awareness
- Ken Griffin's Citadel purchased a substantial portion of the public equity holdings of Situational Awareness, a hedge fund led by former OpenAI researcher Leopold Aschenbrenner, after Situational Awareness experienced significant losses in a recent AI stock downturn.
- Situational Awareness, which had reported a 439% net return through the end of June 2026, was forced to liquidate its public stock portfolio due to steep losses and margin pressure.
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Citadel, a multi-strategy hedge fund managing $71 billion, has acquired a large segment of the public equity holdings from Situational Awareness. Situational Awareness, founded by Leopold Aschenbrenner, a former OpenAI researcher, had built its strategy around the anticipation of significant demand for chips, memory, data centers, and power infrastructure driven by advancements in artificial intelligence. The fund, which launched in late 2024, had grown to an estimated $20 billion to $24 billion in assets under management by mid-2026.
However, recent weeks saw Situational Awareness suffer substantial losses on its AI investments. The fund’s long positions in AI infrastructure and semiconductor stocks, including Nebius Group, SanDisk, Micron, and CoreWeave, reportedly declined by over 35% in July 2026. Concurrently, bearish bets on software companies like Adobe moved against the fund, further impacting its performance. Facing margin pressure, Situational Awareness liquidated its entire public stock portfolio in a single transaction to another major hedge fund.
Despite the liquidation of its public equities, Situational Awareness continues to hold private stakes, including a notable position in Anthropic PBC. The fund is actively seeking fresh capital from existing investors and lenders and is marketing its private holdings. Aschenbrenner, who left OpenAI in April 2024, had published an essay titled “Situational Awareness” outlining his thesis on the rapid emergence of artificial general intelligence (AGI) and its implications, which formed the basis for his investment firm.