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Leo Aschenbrenner's Situational Awareness Blows Up as Citadel Buys His $16BN Book
At 17:43 · chapter starts 17:00
Harry sets the scene: Leo Aschenbrenner, the 25-year-old author of the Situational Awareness memo, parlayed his AI notoriety into a $225 million fund that grew to $45 billion in assets — using 4x leverage on high-volatility AI stocks. In the space of a week, it collapsed. Ken Griffin's Citadel swooped in to buy the public book for a reported $16 billion and reportedly made $3 billion on it almost immediately. Rory O'Driscoll's verdict is precise and merciless: directionally correct on the trend, catastrophically wrong on portfolio construction. Four-times leverage on volatile stocks means the probability of a wipe-out isn't just possible, it's mathematically close to inevitable given enough time [1] — Rory O'Driscoll "Leo Aschenbrenner was directionally right about AI — the data still proves it. But 4x leverage on high-volatility stocks means the math of …" 17:20 . Jason asks the right human question: didn't investors know about the leverage? Nikesh offers reassurance — investors who came in on day one are still up enormously. The sting is for those who came in April through June: they likely lost 80–90 cents on the dollar and will be reading their fund docs very carefully. Rory notes the blackly comic board-room conversation: 'We did a hedge fund, but it appears it wasn't hedged.' The long-term prognosis is fine — Larry Fink had a blowup, SoftBank's Masayoshi Son had blowups, Nikesh worked through them all — but the short-term legal dynamics for late investors are ugly. The broader lesson: being right about AI doesn't make you a great portfolio manager.
Leo Aschenbrenner was directionally right about AI — the data still proves it. But 4x leverage on high-volatility stocks means the math of getting wiped out approaches certainty. Being right about the theme and catastrophically wrong about position sizing is its own unique failure mode.
Leo Aschenbrenner's AI hedge fund, which once had $45B in assets using 4x leverage, collapsed in a week, with Citadel buying the public book for a reported $16B.
