Jane Street disclosed a roughly $15 billion loss for July after its investment in AI-focused hedge fund Situational Awareness was hit by a sharp pullback in U.S. AI stocks, according to the Financial Times. The figure was revealed to creditors as part of the firm’s financial disclosures tied to a private debt financing deal worth about $14.6 billion. JPMorgan is leading that transaction, which includes shifting about $11 billion of public debt to private investors, including Pacific Investment Management Co. (Pimco). Situational Awareness, founded by former OpenAI employee Leopold Aschenbrenner, had made concentrated and highly leveraged bets on AI stocks. As the market reversed in July, the fund suffered heavy losses and was forced to sell part of its public equity positions to Citadel. Despite the one-month hit, Jane Street has remained highly profitable in recent years. Data cited in the report showed record net trading revenue of $16.1 billion in the first quarter of 2026 and about $40 billion for full-year 2025. The report said the loss was unusual for a proprietary trading firm known for keeping a low profile while holding a major position in global markets.
Jane Street lost roughly $15 billion in July after its investment in AI hedge fund Situational Awareness ran into a steep downturn, the Financial Times reported.
People familiar with the matter said the trading firm disclosed the loss while sharing financial information with creditors. The disclosure was tied to a private debt financing deal worth about $14.6 billion. JPMorgan is leading the transaction, which involves moving about $11 billion of public debt to private investors, including Pacific Investment Management Co. (Pimco).
The loss came after a sharp sell-off in U.S. AI stocks in July. Situational Awareness, an AI-themed hedge fund founded by former OpenAI employee Leopold Aschenbrenner, had previously received investment from Jane Street. The fund had built concentrated, highly leveraged positions in AI stocks and was hit hard when the market turned. It was then forced to sell part of its public stock holdings to Citadel.
Even with the July loss, Jane Street has stayed strongly profitable in recent years. Data cited in the report showed the firm posted record net trading revenue of $16.1 billion in the first quarter of 2026. Its net trading revenue for all of 2025 was about $40 billion.
Market participants said the setback was unusual for a proprietary trading firm that has long kept a low profile while holding an important place in global markets. The report added that Jane Street later turned to the private debt market for funding, a move that will also reduce the scope of its financial disclosures to public markets.
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