Leopold Aschenbrenner's hedge fund just surpassed $20 billion in AUM, becoming one of the fastest growing hedge funds in history.
Aschenbrenner launched Situational Awareness in late 2024 at 24 years old with no prior investing experience, after gaining recognition for his AI research at OpenAI.
The fund returned 200% in 2025, is up 270% after fees through May 2026, and has gained over 1,000% since launch.
Jane Street invested in Situational Awareness. A rare move, as the firm almost never backs outside hedge fund managers.
Some of the fund's biggest positions are not disclosed in public filings. Anthropic alone reportedly accounts for roughly 20% of the portfolio, alongside SK Hynix.
Here is how his top public holdings are performing since the Q1 2026 13F filing:
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