Leopold Aschenbrenner's Situational Awareness Fund Collapses from $45 Billion to $10 Billion in Days

Leopold Aschenbrenner, the former OpenAI researcher who parlayed Silicon Valley fame into one of the most closely watched AI-themed hedge funds in the country, watched his flagship vehicle lose the vast majority of its assets this week — a rapid unraveling driven by leveraged semiconductor bets and cascading margin calls.

At its peak earlier this month, Situational Awareness — named after Aschenbrenner's viral 165-page AI manifesto published in June 2024 — held $45 billion in assets. By Thursday, after being forced to offload all of its leveraged public stock positions to Ken Griffin's Citadel at a discount, the fund's holdings had plunged to approximately $10 billion, according to people with knowledge of the situation.

The forced sales included hard-hit names such as SK Hynix and CoreWeave, underscoring how concentrated the fund's public equity book had become in the semiconductor and AI infrastructure trade.

Before this month's decline, Situational Awareness had posted gains of more than 1,000% since its inception in July 2024, according to reporting in The Wall Street Journal, which also noted that Aschenbrenner is just 24 years old.

The fund's structure, however, drew sustained skepticism on Wall Street. Reports indicate Situational Awareness employed leverage of as much as 400%, a figure that critics say made a severe drawdown a question of timing rather than possibility.

"A lot of people saw this blow-up as a matter of not if, but when," said Jerry Diao, who runs a Wall Street coaching firm. "Maybe his views on AI are correct in the long run, but in the public markets, you have to be prepared for the short-term."

Earlier this week, prior to the Citadel sale, roughly two-thirds of the fund's holdings were in long and short positions in public equities, according to one source. The remaining portion consisted of stakes in private companies, dominated by a multibillion-dollar investment in Anthropic — the AI safety company where Aschenbrenner's fiancée, Avital Balwit, serves as chief of staff to CEO Dario Amodei.

The collapse coincides with Aschenbrenner's wedding, set for this weekend, according to sources who spoke with CNBC's David Faber.

Aschenbrenner's trajectory into money management was itself unconventional. A Columbia University valedictorian at 19, he graduated in 2021 and moved into the orbit of effective altruism, a philosophy prevalent in some tech circles. That network led him to work at the Future Fund, the philanthropic arm of FTX, before that firm's collapse. He later joined OpenAI's Superalignment team, working under Ilya Sutskever on AI alignment research, before departing and publishing his manifesto.

The fund attracted a devoted following — online observers who tracked its quarterly filings for signals on which AI stocks to watch — even as critics flagged his lack of prior money management experience.

The near-collapse of Situational Awareness arrives as broader volatility continues to ripple through AI-adjacent equities, reinforcing warnings from veteran traders that conviction-driven, highly leveraged funds face acute structural risk when sentiment in a concentrated sector reverses sharply.

Situational Awareness did not immediately respond to a request for comment. Whether Aschenbrenner attempts to rebuild the fund's public equity exposure or pivots further toward private market stakes — where the fund's Anthropic position remains intact — will determine the next chapter of one of Wall Street's more closely watched stories of the AI boom.

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