Jane Street Quietly Returns With $1 Billion Bitcoin Position

TLDR

• Jane Street disclosed nearly $1 billion in U.S. spot Bitcoin ETF holdings at the end of the second quarter.
• BlackRock’s iShares Bitcoin Trust (IBIT) dominated the portfolio, accounting for roughly $828 million of the reported exposure.
• The firm sharply rebuilt its IBIT position after cutting its holdings by about 71% during the first quarter.
• Jane Street also expanded exposure to other crypto ETFs, including products linked to XRP from Bitwise, Franklin Templeton, Grayscale, Canary Capital, and 21Shares.
• The Form 13F filing shows only certain long securities positions, meaning it does not reveal Jane Street’s full exposure through shorts, futures, swaps, or other hedges.

Jane Street disclosed nearly $1 billion in U.S. spot Bitcoin ETFs in its second-quarter securities filing, led by a large position in BlackRock’s iShares Bitcoin Trust. The holdings reflect positions reported as of June 30, 2026.

The filing followed reports that Jane Street lost about $15 billion in July. Reuters linked the loss to exposure to AI-focused hedge fund Situational Awareness and other market positions. Reuters did not connect the reported loss to Bitcoin ETF holdings.

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