
Leopold Aschenbrenner's Situational Awareness lost 67% in July after AI stocks fell. Forced margin sales handed the portfolio to Ken Griffin's Citadel.
Ken Griffin's Citadel bought the distressed public stock portfolio of Situational Awareness, the AI hedge fund run by 24-year-old former OpenAI researcher Leopold Aschenbrenner. The sale came after a margin call forced the fund to sell down leveraged bets.
The fund returned 439% in the first half of the year. It was a concentrated bet on AI stocks, levered up. When AI stocks tumbled in July, the fund lost roughly 67% for the month. Prime brokers called their loans. The bulk of the public portfolio moved to Citadel on Thursday.
Aschenbrenner named the fund after a 2024 essay he wrote on AI's potential. The name became a punchline on X. "We name the fund situational awareness but lack the situational awareness to sell when we are up 2200% in 2 years," one user wrote. Another posted a clip of Elon Musk grinning next to a somber Barron Trump, captioning it "Ken Griffin: Leopold Aschenbrenner:".
"If you add enough leverage and enough conviction, the market eventually stops judging your ideas. It starts judging your ability to survive," Business Insider's Alistair Barr wrote. Aschenbrenner's network of technical experts helped him pick winners in memory chips and cloud computing. The same conviction drove him to lever up those bets.
A third X user called the trade a "bad ass" high-risk bet, noting it happened days before Aschenbrenner's wedding. Another shared Charlie Munger's "three Ls" rule about the dangers of leverage.
Aschenbrenner held onto his private holdings, including a sizable stake in Anthropic. Several commenters said the early track record would keep clients on board. Situational Awareness and Citadel did not immediately respond to requests for comment.
Drafted by a large language model from the source reporting linked above, then screened by automated publishing checks. It is not read by a journalist before publication. Some articles cite our Alpha Score. Verify prices and figures against the original source. Educational coverage, not personalized advice.