"AI Stock God" Blow-Up Drags Down Jane Street to $15 Billion July Loss, First Monthly Loss in a Decade
- Jane Street was reported to have lost about $15 billion in July, which would be its first monthly loss in roughly a decade.
- The losses were linked mainly to the blow-up of its investment in Situational Awareness, an AI-focused hedge fund founded by former OpenAI researcher Leopold Aschenbrenner, and to sharp volatility in tech stocks.
- Jane Street said in an internal memo that the positions that lost money were largely the same trading portfolios that had performed strongly in the second quarter.
- The firm also took losses on long positions in Asian non-AI stocks, and said it had already closed a significant portion of the risk exposures behind the July losses.
- At the same time, Jane Street was moving ahead with about $14.6 billion in debt refinancing, backed by major institutional investors including Pimco, Capital Group, and Fidelity.
Multiple media reports said Jane Street suffered about $15 billion in losses in July, a result that would mark its first monthly loss in around ten years. The losses were concentrated in portfolios tied to AI-related equities and other technology stocks, which had posted strong gains earlier in the year before reversing sharply in July.
A key source of pressure was Situational Awareness, the AI-focused hedge fund founded by former OpenAI researcher Leopold Aschenbrenner. After a strong first half, the fund faced margin calls during the July selloff and was forced to liquidate public stock holdings, including selling most of its equity portfolio to Citadel.
Jane Street said in an internal memo that its losses came largely from the same trading books that had outperformed in the second quarter. The firm also reported losses on long positions in Asian non-AI stocks and said it had already reduced a substantial part of the affected exposures. For markets, the report is mixed: it is potentially negative for AI and tech stocks in the near term, while the broader impact on stock and credit markets is more neutral because Jane Street still reported strong year-to-date trading revenue.
The disclosure came as Jane Street advanced a roughly $14.6 billion debt refinancing plan. According to the reports, the firm is replacing and reshaping parts of its financing structure with private debt, with participation from large investors such as Pimco, Capital Group, and Fidelity.
“AI股神”爆仓拖累 Jane Street 7月亏损150亿美元，十年来首度月度亏损
多家媒体报道称，Jane Street 7月亏损约150亿美元；如果属实，这将是该公司约十年来首次出现单月亏损。亏损主要集中在与 AI 概念股和其他科技股相关的组合上，而这些头寸此前在今年上半年表现强劲，但在7月急剧回撤。
一个重要压力来源是 Situational Awareness，这是一只由前 OpenAI 研究员 Leopold Aschenbrenner 创立、主打 AI 主题的对冲基金。该基金在上半年收益可观，但7月遭遇大幅下跌后触发追加保证金要求，并被迫大量平仓公开股票仓位，其中大部分股权组合被卖给了 Citadel。
Jane Street 在内部备忘录中表示，亏损主要来自第二季度表现最强的那批交易组合。公司同时在一些亚洲非 AI 股票的多头仓位上出现亏损，并称已经削减了造成7月亏损的相当一部分风险敞口。就市场影响而言，这一消息对 AI 和科技股短线偏利空；对整体股票和信贷市场的影响则相对中性，因为报道同时显示该公司年初至今交易收入仍然很强。
在披露亏损的同时，Jane Street 还在推进约146亿美元的债务再融资。报道显示，该公司正用私募债务重塑部分融资结构，Pimco、Capital Group 和 Fidelity 等大型机构参与了这笔融资。