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Fed, BoE probe banks' exposure to trading firms after Jane Street loss, FT reports - Finance news and analysis from Global Banking & Finance Review
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Fed, BoE probe banks' exposure to trading firms after Jane Street loss, FT reports

Published by Global Banking & Finance Review

Posted on September 22, 2026

2 min read

· Last updated: September 22, 2026

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Fed, Bank of England Probe Banks' Exposure After Jane Street's July Losses

Central Banks and Regulatory Scrutiny Following Jane Street's Losses

(Corrects September 21 story, paragraph 2, to say Situational Awareness fund sold most of its public equities portfolio to Citadel, not Citadel Securities)

Background: July Turmoil in Trading Firms

Sept 21 (Reuters) - The US and UK central banks have asked global banks about their exposures to large trading firms after turmoil at a hedge fund caused large losses at proprietary trading firm Jane Street in July, the Financial Times reported on Monday.

Situational Awareness Fund's Forced Asset Sale

The AI-focused Situational Awareness fund, run by former OpenAI researcher Leopold Aschenbrenner, was forced to sell most of its public equities portfolio to Citadel after a sharp selloff in AI and chip stocks in July. 

Jane Street's Losses and Investment Exposure

Jane Street lost roughly $15 billion that month, particularly through its investment in the hedge fund and other technology holdings.

Central Bank Inquiries and Risk Assessment

The central banks are 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. 

Responses from Involved Parties

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

SEC Investigation into Wall Street Banks

Last month, the US Securities and Exchange Commission subpoenaed Wall Street banks, including Goldman Sachs, JPMorgan, Citigroup and Bank of America.

Focus of the SEC Probe

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 Credits

(Reporting by Abu Sultan in Bengaluru; Editing by Janane Venkatraman and Harikrishnan Nair)

Key Takeaways

  • US and UK regulators are probing how much banks are exposed to trading firms and how intraday risk and controls were managed amid recent AI‑linked market stress (investing.com).
  • Jane Street suffered approximately $15 billion in losses in July due to its exposure to Situational Awareness, leading to heightened regulator scrutiny (investing.com).
  • Situational Awareness, run by former OpenAI researcher Leopold Aschenbrenner, was forced to liquidate most of its public equity holdings to Citadel Securities amid the sharp AI and chip stock sell‑off (investing.com).

References

Frequently Asked Questions

Why are the US and UK central banks probing banks' exposure to trading firms?
The central banks are assessing global banks' exposure after Jane Street suffered significant losses due to turmoil at the Situational Awareness fund.
How much did Jane Street lose in July 2023?
Jane Street reportedly lost around $15 billion in July, mainly due to investments in the Situational Awareness hedge fund and technology holdings.
What triggered the losses at Situational Awareness fund?
A sharp selloff in AI and chip stocks forced the Situational Awareness fund to liquidate most of its public equities portfolio.
Which regulatory bodies are involved in the probe?
The US Federal Reserve and the Bank of England are probing, while the US SEC has subpoenaed major Wall Street banks.
Which banks have been subpoenaed by the SEC?
The SEC has subpoenaed banks including Goldman Sachs, JPMorgan, Citigroup, and Bank of America, related to the Situational Awareness fund's activities.

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