Situational Awareness' portfolio sinks 67% in July on AI stock rout, letter shows

• The fund sold the bulk of its stock portfolio to Citadel after leveraged positions rapidly moved against it and market liquidity dried up, creating dynamics similar to a 'bank run'
• Despite the 67% monthly loss, the fund's strong performance earlier in 2026 left it up 80% year-to-date as of July
• The collapse reflects broader market fears that AI valuations have reached unsustainable levels, with short sellers piling into bets against the sector

Summary: Situational Awareness Hedge Fund Suffers Major Loss on AI Stock Rout

Leopold Aschenbrenner's AI-focused hedge fund, Situational Awareness, experienced a dramatic 67% portfolio decline in July 2026, according to an investor letter reviewed by Reuters. The fund, managed by a former OpenAI researcher, was forced to sell the bulk of its stock portfolio to Citadel following the significant losses.

Key Developments

Aschenbrenner acknowledged in his letter that the fund "came closer to permanent capital impairment than is acceptable," admitting he "let you down this month." Despite the severe July losses, the fund remains up 80% year-to-date in 2026, demonstrating the magnitude of earlier gains since its 2024 launch.

The fund has completely removed leverage from its portfolio following the crisis. The losses were driven by rapid adverse movements in core positions, compounded by deteriorating market liquidity and margin calls from prime brokers. Aschenbrenner described the situation as resembling "a bank run: vulnerability begetting more vulnerability."

Market Context

The collapse reflects broader concerns about the sustainability of AI sector valuations and potential cooling of the AI boom. The episode highlights the risks of concentrated, leveraged bets in crowded trades, as short sellers have increased positions betting on further declines in AI stocks.

Outlook

Despite the setback, Aschenbrenner expressed continued optimism about the portfolio's prospects, stating that "underlying fundamentals continue to strengthen" even amid market turbulence. The incident serves as a cautionary example of how quickly leveraged positions can unravel during adverse market conditions, particularly in high-momentum sectors like artificial intelligence.