Jane Street Discloses Over $1B in Bitcoin ETF Holdings

Jane Street, a leading quantitative trading firm, disclosed over $1 billion in Bitcoin ETF shares as of June 30. The firm's largest disclosed position was BlackRock's iShares Bitcoin Trust (IBIT), with approximately $828 million invested.

This marks a significant increase from the previous quarter, where Jane Street reported about $225 million in IBIT shares. The firm had held more than 20 million IBIT shares at the end of 2025, but reduced its position during the first quarter.

Jane Street's holdings are subject to various interpretations, as the report only discloses long ETF shares and does not account for short positions or derivatives. The filing also cannot establish the firm's motive behind holding these assets.