For the first time in nearly a decade, Jane Street suffers a massive loss of $15 billion amid a sharp decline in AI stocks.

According to a knowledgeable source, due to the hedge fund Situational Awareness, which focused on artificial intelligence, failing and dragging down asset prices across the entire stock market, Jane Street has suffered a single-month loss for the first time in nearly a decade, amounting to approximately $15 billion. The turbulence in the stock market has resulted in rare and significant losses for Jane Street, which invests in Situational Awareness and AI companies. A source, who wished to remain anonymous, stated that the company's investments in the aforementioned hedge fund and its missteps in the Asian stock market were contributing factors to the losses. July was a terrible month, said Jane Street partner Turner Batty in an internal memo. Nevertheless, the source revealed that the company has generated over $40 billion in net trading income year-to-date, surpassing its record for the highest annual figure on Wall Street set in 2025.