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Tech bro’s $45 billion AI fund collapses days before lavish California wedding - New York Post

Reported by Nypost
Aug 2, 2026· 3 min read
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Key Takeaways
  • • Leopold Aschenbrenner's Situational Awareness hedge fund collapsed from $45 billion to approximately $10 billion in assets within days, representing a 78% decline driven by forced liquidation of leveraged semiconductor and AI infrastructure positions.
  • • The fund experienced a 67% monthly decline after margin calls forced Aschenbrenner to offload all leveraged stock positions—including hard-hit names like SK Hynix and CoreWeave—to Citadel at a discount, despite being up 80% year-to-date and over 1,000% since inception in July 2024.
  • • Aschenbrenner, a 24-year-old former OpenAI researcher and Columbia University valedictorian, launched the fund with no prior institutional money management experience; early backers included the Collison brothers, Daniel Gross, and Nat Friedman, and the fund achieved 439% returns before the collapse.
  • • The timing coincided with Aschenbrenner's lavish wedding in Carmel, California, as guests arrived during the fund's unraveling, creating a high-profile cautionary tale about concentrated leverage, AI sector volatility, and inexperienced fund management in the current market environment.
Summary
Leopold Aschenbrenner's rapid ascent and sudden collapse in the hedge fund space represents one of the most dramatic reversals in recent alternative asset management. The Situational Awareness fund, named after Aschenbrenner's influential 165-page June 2024 manifesto on artificial superintelligence that became required reading in Silicon Valley, peaked at $45 billion in assets earlier this month before plummeting to approximately $10 billion by Thursday, following forced liquidations across his portfolio.

The fund's implosion stemmed from excessive leverage deployed against semiconductor and AI infrastructure equities during a period of market volatility. Margin calls forced Aschenbrenner to offload all leveraged positions, including significant holdings in SK Hynix and CoreWeave, at distressed valuations to Citadel, Ken Griffin's flagship operation. This fire-sale dynamic accelerated the fund's deterioration, with the 78% decline occurring over the span of just days despite the fund maintaining positive year-to-date returns of 80% and cumulative gains exceeding 1,000% since the fund's July 2024 inception.

Aschenbrenner's trajectory exemplifies both the opportunities and risks inherent in the current AI investment cycle. At 24 years old, the Columbia University valedictorian who ranked first in his class positioned himself as a prescient voice on AI superintelligence and superintelligence timelines. Early institutional backing from prominent figures including the Collison brothers, Daniel Gross, and Nat Friedman validated his vision, allowing the fund to accumulate $45 billion in assets with no prior track record managing institutional capital. However, the collapse has reignited debate within investment circles about whether Aschenbrenner's success reflected genuine foresight or favorable market conditions combined with aggressive leverage.

The fund's unraveling occurred amid intensifying volatility in semiconductor and AI infrastructure equities, sectors Aschenbrenner had identified as critical to superintelligence development. The timing of the collapse—coinciding with the arrival of wedding guests for his Carmel, California ceremony—transformed a portfolio catastrophe into a high-profile reputational event, underscoring the personal and professional consequences of concentrated bets and overleveraged positions in volatile asset classes. Despite the dramatic setback, the fund's substantial year-to-date gains highlight the double-edged nature of aggressive leverage in trending sectors during bull markets.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Nypost Tech bro’s $45 billion AI fund collapses days before lavish California wedding - New York Post