Jane Street Cuts Bitcoin Holdings 71%, Adds $82M to Ether ETFs

Jane Street Group reduced several bitcoin-linked holdings and increased positions in ether exchange-traded funds and selected crypto-related stocks, according to its Form 13F filed with the U.S. Securities and Exchange Commission for the quarter ended March 31, 2026.

The firm cut its stake in BlackRock’s iShares Bitcoin Trust by about 71% to roughly 5.9 million shares, a position valued at about $225 million at quarter end. It trimmed Fidelity’s Wise Origin Bitcoin Fund by about 60% to nearly 2 million shares, worth about $115 million. A separate Strategy holding fell from roughly 968,000 shares to about 210,000 shares, reducing the reported value from about $146 million to about $27 million.

Bitcoin traded below $80,000 at times during the quarter and broader crypto markets experienced selling pressure.

The filing shows reductions in several bitcoin mining companies, including IREN, Cipher Mining, Terawulf and Core Scientific.

Jane Street increased its exposure to ether-focused ETFs. Holdings in BlackRock’s iShares Ethereum Trust nearly doubled, and the firm expanded its position in Fidelity’s ether fund. Combined additions across the two ether ETFs totaled about $82 million.

Equity shifts included a rise in Riot Platforms to roughly 7.4 million shares from about 5 million, a position valued at about $91 million. The firm modestly increased its Coinbase stake. Its Galaxy Digital holding rose from roughly 17,000 shares to about 1.5 million shares, increasing the reported value to roughly $28 million from under $400,000.

Form 13F reports only long U.S. equity positions held at quarter end. The filing does not disclose derivatives, short positions or many market-making activities. The positions reported reflect holdings as of March 31, 2026.