
Situational Awareness, a hedge fund started by 24-year-old Leopold Aschenbrenner based on bold artificial-intelligence predictions, has collapsed from $45 billion to $10 billion in value after leveraged AI stock bets went wrong during recent market declines.
The fund sold its public equity portfolio to Ken Griffin's Citadel and is negotiating to sell its $5 billion stake in Anthropic; if the loss figures are confirmed, it would be the largest hedge-fund loss on record, surpassing Archegos Capital Management's $8 billion loss in 2021.
What happened
Situational Awareness, a hedge fund started by 24-year-old Leopold Aschenbrenner (a former OpenAI employee), has sold most or all of its public stock portfolio to Ken Griffin's Citadel after steep losses. The fund was worth $45 billion at the start of July and is now worth $10 billion—a $35 billion loss—after the sale of assets. Its largest holdings (Nebius Group, Sandisk, Micron, and CoreWeave) all fell more than 35 percent this month.
Why it matters
The collapse reveals the risk of extreme leverage in AI betting. Aschenbrenner built the fund on essays predicting superintelligence by 2027 and argued that aggressive AI stock concentration was justified; instead, borrowed money magnified losses when AI stocks declined. The fund still holds $5 billion in Anthropic (which it was negotiating to sell) and had borrowed heavily to amplify its bets, meaning margin calls forced rapid asset sales. If the reported numbers hold, this loss ($35 billion) would exceed the previous record-holder Archegos Capital Management's loss of $8 billion in 2021.
What to watch
The fund's remaining private holdings and whether the $5 billion Anthropic stake sale is completed. The article notes more details are expected in coming days, particularly from Wall Street professionals on the other side of these trades. Aschenbrenner, who was fired from OpenAI for leaking internal information, had no prior money management experience when launching the fund.
Leopold Aschenbrenner, a 24-year-old former OpenAI employee, founded Situational Awareness as a hedge fund focused on artificial intelligence bets. The fund's strategy rested on a series of essays Aschenbrenner published arguing that machines capable of true thinking and reasoning would emerge by 2025–26, outpacing college graduates, and that superintelligence in the genuine sense would arrive by decade's end. He predicted that national security forces unseen in half a century would be unleashed and that an all-out race (or war) with China might follow. The entire thesis was that artificial general intelligence was coming, and the path to wealth lay in dumping capital into AI stocks and riding the wave.
Aschenbrenner's essays impressed influential Silicon Valley figures. Tyler Cowen, a libertarian economist with reach in certain circles, had called him an economics prodigy at age 17 and his Emergent Ventures fund gave him a grant. Aschenbrenner had graduated from Columbia University in 2021 as valedictorian at age 19, worked briefly at the FTX Future Fund (before FTX collapsed), and then joined OpenAI's superalignment team. He was later fired from OpenAI for leaking internal information. Two months after his departure, he published the Situational Awareness essays. Despite having no prior money management experience, Aschenbrenner attracted prestigious backers: Patrick and John Collison (Stripe cofounders), Daniel Gross and Nat Freedman (Meta AI leaders), Carl Shulman (formerly of Peter Thiel's Clarium Capital) as director of research, and eventually Jane Street, a Wall Street firm that rarely allocates capital to outside money managers. Ivanka Trump called his essays "an excellent and important read."
The fund operated with extreme leverage. Hedge funds typically borrow money to maximize their bets, and Aschenbrenner followed this playbook aggressively. By early 2024, he told podcast host Dwarkesh Patel that "obviously, not blowing up is task number one and two," and that timing and sequence of bets mattered. At one point, the fund claimed to be up 439 percent. But leverage magnifies losses as well as gains. The fund was worth $45 billion at the start of July. By the time AI stocks began declining—driven by market nervousness about AI risk—margin calls from lenders demanded more collateral. Situational Awareness held calls with investors and lenders to raise capital. Its largest holdings at the end of the first quarter were Nebius Group, Sandisk, Micron, and CoreWeave; all fell more than 35 percent in the month of the crisis. Facing a margin squeeze, the fund first tried to sell parts of its portfolio to existing investors, then sold what the Financial Times described as a large portion of its $16 billion public equity portfolio to Ken Griffin's Citadel. After the sale, the fund's value had crashed to $10 billion—a loss of $35 billion. According to CNBC, the fund was also negotiating to sell its $5 billion stake in Anthropic, though it was unclear whether that deal had closed. If the reported figures hold, Situational Awareness's loss would exceed the previous record by Archegos Capital Management, which lost $8 billion in ten days in 2021. The irony embedded in the fund's name—chosen after Aschenbrenner's essays on gaining "situational awareness" about AI's imminent arrival—was not lost on observers.
Situational Awareness collapsed under the weight of extreme leverage combined with a miscalculation about AI timelines. Aschenbrenner's hedge fund was built on essays arguing that artificial general intelligence would arrive by 2027 and that aggressive AI stock concentration was therefore justified. To maximize returns on this conviction, the fund borrowed heavily—using leverage to amplify its position. As Bloomberg's Matt Levine notes, this meant betting not 100 percent of capital into AI, but closer to 300 percent. That strategy magnified gains when it worked (the fund at one point claimed to be up 439 percent), but it catastrophically magnified losses when AI stocks declined and lenders issued margin calls demanding more collateral.
The fund's implosion reveals a broader pattern: Aschenbrenner's backers—serious investors and technologists including Stripe's Collison brothers, Meta AI researchers, and Jane Street—appear to have relied on social proof rather than rigorous due diligence. Aschenbrenner had cultivated an impressive set of endorsements (Tyler Cowen called him an economics prodigy at 17; Ivanka Trump praised his essays), but his actual track record was thin: a few months at the collapsed FTX organization and roughly a year at OpenAI, where he was fired for leaking internal information. No previous money management experience. Yet major institutional investors backed a 24-year-old's first hedge fund, apparently betting that his networks and conviction about AI made up for the lack of demonstrated competence in capital allocation.
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