Jane Street takes $15 billion hit following tech stock sell-off, FT reports
Wall Street trading firm Jane Street lost $15 billion during July's technology stock sell-off, the Financial Times reported. The hit is linked to the firm's concentrated bets on artificial intelligence-related positions as the sector's rally reversed sharply.

Wall Street trading giant Jane Street lost roughly $15 billion during a sharp technology stock sell-off in July, the Financial Times reported, citing people familiar with the firm's positions. Jane Street is best known for market-making and arbitrage strategies rather than directional bets of this scale.
Most of the loss is tied to concentrated positions in artificial intelligence-related stocks and derivatives, according to the report. Shares across the AI sector tumbled as investors began questioning whether the months-long rally in the space had run ahead of underlying earnings growth.
Jane Street has not issued a public statement on the loss. The episode has become one of the starker recent examples of how even sophisticated trading firms can be exposed to concentrated, leveraged bets when a fast-moving rally suddenly reverses.
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