Key Highlights
- Jane Street decreased Bitcoin ETF positions during Q1 2026, according to its latest 13F filing released Tuesday.
- The proprietary trading firm reduced holdings in BlackRock’s iShares Bitcoin Trust and Fidelity Wise Origin Bitcoin Fund significantly.
- IBIT shares decreased approximately 71% quarter-over-quarter to roughly 5.9 million shares with a value approaching $225 million.
- FBTC shares declined roughly 60% to approximately 2.0 million shares valued around $115 million.
- Jane Street expanded Ether ETF positions through increased stakes in BlackRock’s iShares Ethereum Trust and Fidelity Ethereum Fund.
Jane Street decreased its Bitcoin ETF positions during Q1 2026 while expanding Ether fund exposure. The Tuesday 13F filing revealed reduced IBIT and FBTC holdings alongside increased ETHA and FETH positions. The document also disclosed adjustments to Strategy and multiple crypto equity holdings as of March 31.
Bitcoin Holdings Decline Across ETFs, Strategy Shares, and Mining Stocks
Jane Street lowered its BlackRock iShares Bitcoin Trust position to 5.9 million shares with a value approaching $225 million. This represents a 71% decrease from Q4 2025 levels.
The firm decreased its Fidelity Wise Origin Bitcoin Fund holdings to 2.0 million shares valued around $115 million. This position experienced a 60% decline compared to the previous quarter.
The 13F disclosure reflected positions as of quarter-end, meaning it captured a snapshot rather than complete trading activity. Derivatives and hedging instruments remained outside the scope of this report. The filing documented holdings as of March 31. Market prices fluctuated throughout the reporting period.
Jane Street reduced its Strategy common stock holdings to 210,000 shares valued around $27 million. The firm previously held 968,000 shares worth approximately $145.9 million during Q4 2025.
This adjustment followed earlier accumulation, with previous reports indicating Jane Street expanded Strategy holdings by 473% during Q4 2025. The Q1 disclosure then revealed a 78% quarterly reduction.
Jane Street also decreased holdings in multiple Bitcoin mining companies, including IREN, Cipher Mining, TeraWulf, and Core Scientific. The filing documented lower quarter-end positions throughout these holdings.
Jane Street Expands Ethereum ETF Stakes and Select Crypto Equity Positions
Jane Street expanded Ethereum ETF exposure and approximately doubled its BlackRock iShares Ethereum Trust holdings. The firm also increased its position in Fidelity Ethereum Fund.
Throughout ETHA and FETH combined, the filing indicated Jane Street added $82 million in disclosed value during Q1 2026. The analysis also referenced Wells Fargo disclosures indicating Ether ETF purchases during early 2026.
Jane Street expanded its Riot Platforms holdings to approximately 7.4 million shares from roughly 5.0 million. Position value increased to around $91 million from approximately $63 million.
Jane Street grew its Coinbase position to approximately 888,000 shares from roughly 778,000 shares. The filing assigned the position a value around $155 million following approximately $176 million during Q4 2025.
Jane Street substantially expanded Galaxy Digital holdings to approximately 1.5 million shares from roughly 17,000 shares. The filing valued this stake at nearly $28 million, representing growth from approximately $380,000.
The quarter-end disclosure encompassed U.S. equity positions and specific ETF holdings exclusively. Swaps, futures, and additional instruments remained outside reporting requirements.
Reuters documented Jane Street achieving record Q1 trading revenue reaching $16.1 billion amid volatile market conditions. Reuters attributed gains to artificial intelligence-related investment activity.
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