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US Fed, BoE step up scrutiny of bank exposure to trading firms after Jane Street loss, FT reports

By Thomson Reuters Sep 21, 2026 | 12:08 AM

Sept 21 (Reuters) – The Bank of England and the US Federal Reserve are asking global banks about their exposures ​to large trading firms after turmoil ‌at hedge fund Situational Awareness caused large losses at Jane Street, the Financial Times reported on Monday.

The AI-focused fund, run by former OpenAI researcher Leopold ‌Aschenbrenner, ​was forced to sell most ⁠of its public ⁠equities portfolio to Citadel Securities after a sharp sell-off in AI and chip stocks. This contributed to Jane Street taking a $15 ​billion hit that month.

The central banks are now seeking information on the trading ⁠firms’ risk appetite, how ⁠banks’ exposure to them evolved throughout ​the trading day, and how risk controls operated, ​the FT report said, citing people ‌familiar with the matter.

Reuters could not immediately verify the report. The US Federal Reserve, the Bank of England and Jane Street did ⁠not immediately respond to a Reuters request for comment outside of business hours.

Last month, the US ⁠Securities and ‌Exchange Commission subpoenaed Wall Street ⁠banks, including Goldman Sachs, JPMorgan, Citigroup ​and ‌Bank of America. It was ​examining Situational ⁠Awareness’ trading activity and use of leverage following its near-collapse, including the trades that triggered margin calls and the fund’s communications with lenders.

(Reporting by Abu Sultan in Bengaluru; Editing by ​Janane Venkatraman)