Citadel acquires majority of Situational Awareness hedge fund's stock portfolio following AI sector losses

Jul 30, 2026

Ken Griffin's Citadel acquires the bulk of Situational Awareness's public stock portfolio after the AI-focused hedge fund, run by Leopold Aschenbrenner, suffered heavy losses. Facilitated by major Wall Street prime brokers, the deal allows Situational Awareness to offload its leveraged public equities while retaining a $10 billion book of stocks and private investments like Anthropic. The transaction follows a historic July 2026 market selloff in artificial intelligence stocks.

Citadel acquires Situational portfolio

▪Citadel acquired the portion of Situational Awareness's public portfolio that was financed by leverage from brokers.
▪Ken Griffin's Citadel acquired the majority of Situational Awareness's public stock portfolio after Situational Awareness suffered heavy losses in its technology holdings.
▪Situational Awareness did not sell its private investment stake in Anthropic as part of the portfolio deal with Citadel.
▪Following the transaction, Situational Awareness will retain a book of approximately $10 billion consisting of stocks and private investments.

AI sector market selloff

▪Global hedge funds experienced their largest monthly drawdown on record in July 2026 due to a widespread selloff in artificial intelligence stocks.
▪Asia-focused fundamental long-short hedge funds declined by an average of 18.6 percent in July 2026 through July 28, 2026.
▪Stock-picking hedge funds unwound positions in artificial intelligence companies by covering short positions and selling long positions in late July 2026.

Situational Awareness fund performance

▪Situational Awareness held public equity positions in prominent technology and artificial intelligence companies including Broadcom, Intel, and CoreWeave.
▪Investors in Situational Awareness include Jane Street, Stripe co-founders Patrick and John Collison, and Meta Platforms executives Daniel Gross and Nat Friedman.
▪Situational Awareness achieved a 439 percent return from the start of 2026 until the end of June 2026.
▪Situational Awareness, run by former OpenAI researcher Leopold Aschenbrenner, previously managed approximately $20 billion in assets and employed about 20 people.

Hedge fund leverage risks

▪Hedge funds utilize leverage from lenders to amplify market returns, which can trigger margin calls and forced asset sales during market downturns.
▪Situational Awareness faced pressure to either raise fresh capital from investors or offload its entire public equities book before selling to Citadel.

Prime broker deal facilitation

▪Prime brokers Goldman Sachs, JPMorgan Chase, Bank of America, and Citigroup facilitated the portfolio transaction between Citadel and Situational Awareness.
▪Wall Street prime brokers provided the leverage financing the public portfolio assets that Citadel acquired from Situational Awareness.