According to its Form 13F filing with the SEC on Nov. 12, Jane Street's combined stake in three major spot Bitcoin ETFs rose from approximately $926 million at the end of June to $1.79 billion by Sept. 30.
The standout change was a significant reallocation toward Fidelity's Wise Origin Bitcoin Fund (FBTC). Jane Street increased its FBTC position from 886,736 shares to 7,010,008 shares, a roughly 691% increase worth $509.2 million at quarter-end, up from $45.3 million. Meanwhile, it trimmed BlackRock's iShares Bitcoin Trust (IBIT) by about 19%, reducing its stake from 24.88 million to 20.22 million shares, though the position's value rose to $957 million as the ETF's price gained. Jane Street also held 11.69 million shares of ARK 21Shares Bitcoin ETF (ARKB), valued at approximately $324 million. As an authorized participant for several spot Bitcoin ETFs, Jane Street's holdings often reflect inventory tied to client demand rather than a long-term directional bet.