Leopold Aschenbrenner's Situational Awareness hedge fund hits $20B AUM, up 270% after fees — Jane Street invests
Key Points
- Leopold Aschenbrenner's Situational Awareness hedge fund reaches $20 billion AUM, up 270% after fees, with 2025 returns near 200% in a year when most hedge funds targeted 13–20%.
- Jane Street, the quantitative trading firm that rarely invests in outside managers, backs Situational Awareness in a rare institutional signal of confidence in AI-focused hedge fund thesis-making.
- The 24-year-old Aschenbrenner drew unusual Wall Street attention after the Wall Street Journal profiled his fund in connection with 13F filings, a level of scrutiny on hedge fund disclosures not seen in years.
Summary
Leopold Aschenbrenner's Situational Awareness hits $20B AUM, up 270% after fees
Leopold Aschenbrenner's AI-focused hedge fund, Situational Awareness, has crossed $20 billion in assets under management, up 270% after fees. The fund ended 2025 up roughly 200% — a performance that stands apart in a year when most hedge funds target returns in the 13–20% range.
The fund, which Aschenbrenner launched with AI intellectual Karl Schulman, lost money once in early 2025 after the DeepSeek development but has been on an absolute run since. Early backers included Stripe co-founders Patrick and John Collison, as well as Daniel Gross and Nat Friedman, both now leading Meta's AI platform efforts. Dwarkesh Patel, an independent AI commentator, also backed the fund early.
The most significant recent signal came from Jane Street, the quantitative trading firm that rarely allocates capital to outside money managers. Jane Street's investment in Situational Awareness marks a rare moment of institutional recognition for a hedge fund focused on AI thesis-making.
The Wall Street Journal profiled Aschenbrenner, 24, in connection with his fund's 13F filings, drawing unusually high attention to what is still a young and relatively small manager by hedge fund standards. One observer noted that this level of attention on a hedge fund's filings had not been seen in a very long time.
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