Leopold Aschenbrenner’s AI hedge fund sells holdings after steep losses

Citadel bought most of Leopold Aschenbrenner’s Situational Awareness LP stock book after the AI share rout forced the 24-year-old former OpenAI researcher to unwind his public positions. The sale came after steep losses hit the San Francisco hedge fund, which had become one of Wall Street’s most closely watched bets on artificial intelligence.

Situational Awareness was down 67% in July, and the firm told investors, “We let you down this month,” after offloading the bulk of its public-stock portfolio to Ken Griffin’s Citadel. CNBC said Aschenbrenner was forced to unwind all public stock positions after the losses, while later reports said the fund sold the bulk of its public-equity portfolio, including longs and shorts, in one block before the market opened.

The numbers underscored how large the bet had become. Reports said Situational Awareness had about $20 billion in public-equity positions, a scale that made the fund’s reversal more than a personal stumble. SpotGamma described the liquidation as an unwinding of a $20 billion AI book in a single trade, a reminder of how quickly a crowded theme can move from momentum to distress when leverage and volatility collide.

WhaleWisdom lists Situational Awareness as based in San Francisco and shows discretionary assets under management of $9.278 billion in a Form ADV dated April 27, 2026. Separate reports said the firm was seeking fresh capital after the losses, an indication that the damage extended beyond one bad month and into the fund’s ability to keep building the AI-focused portfolio that made Aschenbrenner a name on Wall Street.

The episode landed as a stress test for the broader AI trade, not just for one hedge fund manager. A concentrated bet on the theme can ripple outward when it is financed with leverage and held by a growing crowd of investors chasing the same stocks, from hedge funds to index products that now carry AI-heavy names into retirement accounts. When a large player is forced to dump positions, the move can magnify swings in both directions, leaving even passive investors exposed to the same volatility that hit Situational Awareness.