Former OpenAI researcher's fund jumps 439% in 6 months, then crashes and forces massive sell-off
According to a WSJ report, former OpenAI researcher Leopold Aschenbrenner's hedge fund, Situational Awareness, had to sell most of its public stock holdings to Citadel following severe losses on its AI investments. During the first half of 2026, the fund saw a 439% return, with its managed assets reaching a peak of $45 billion. However, the two-year-old fund's AI investments collapsed in July.
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