Who is Jane Street?

Who is Jane Street? They are a mysterious high frequency trading hedge fund on Wall Street that seems to have its hands in everything with some questionable behavior. Jane Street was started in 2000 by three former executives of Susquehanna International Group and an IBM developer. There is no public face to the firm, and they do not like publicity. New hires are discouraged from drawing any attention to themselves or the firm. That means no media and anything that might catch the attention of regulators. Jane Street has grown from a handful of employees to over 3,500 with $45 billion in trading profits so far in 2026. Jane Street has become a major player on Wall Street and when they surface in the news it is usually negative. Whether allegations of insider trading in crypto, having an alum like Sam Bankman Fried, suing rival Millennium Management, or losing $15 billion to situational awareness, this hedge fund gets around. Make no mistake, this hedge fund is here to stay, and they are part of the new bread on Wall Street. This episode reviewed two articles from The Wall Street Journal (subscription required) titled “Secretive Wall Street Powerhouse Jane Street Seizes the AI spotlight” and “Jane Street suffers loss of about $15 billion following troubles at Situational Awareness.”