Jane Street Slashes Bitcoin ETF Exposure, Adds to Ethereum ETF Holdings

TLDR

• Jane Street reduced its Bitcoin ETF holdings in the first quarter of 2026, based on a Tuesday 13F filing.
• The filing showed Jane Street cut BlackRock’s iShares Bitcoin Trust and Fidelity Wise Origin Bitcoin Fund positions.
• IBIT holdings fell about 71% from the prior quarter to roughly 5.9 million shares valued at nearly $225 million.
• FBTC holdings dropped about 60% to around 2.0 million shares worth about $115 million.
• Jane Street increased exposure to Ether ETFs by raising positions in BlackRock’s iShares Ethereum Trust and Fidelity Ethereum Fund.

Jane Street cut its Bitcoin ETF holdings in Q1 2026 and boosted Ether fund stakes. A Tuesday 13F filing showed lower IBIT and FBTC positions and higher ETHA and FETH exposure. The filing also listed shifts across Strategy and several crypto equities by March 31.

Bitcoin Exposure Drops Across ETFs, Strategy, and Miners

Jane Street reduced BlackRock’s iShares Bitcoin Trust to 5.9 million shares valued near $225 million. The position fell 71% from Q4 2025.

Jane Street cut Fidelity Wise Origin Bitcoin Fund to 2.0 million shares worth about $115 million. That stake fell 60% from the prior quarter.

The 13F listed quarter-end positions, so it did not show the full trading book. It also excluded derivatives and any hedges. The filing tracked March 31 holdings. Prices moved during the quarter.

Jane Street trimmed its Strategy common stock to 210,000 shares valued near $27 million. It held 968,000 shares worth about $145.9 million in Q4 2025.

The shift followed a prior buildup, as reports said Jane Street increased Strategy holdings by 473% in Q4 2025. The Q1 filing then showed a 78% quarter drop.

Jane Street also cut several Bitcoin mining stocks, including IREN, Cipher Mining, TeraWulf, and Core Scientific. The filing showed lower quarter-end positions across those names.

Jane Street, Ethereum ETFs, and Selective Crypto Equities

Jane Street increased exposure to Ethereum ETFs and nearly doubled BlackRock’s iShares Ethereum Trust position. It also lifted its stake in Fidelity Ethereum Fund.

Across ETHA and FETH, the filing showed Jane Street added $82 million in reported value in Q1 2026. The report also cited Wells Fargo disclosures showing Ether ETF buying in early 2026.

Jane Street raised its Riot Platforms stake to about 7.4 million shares from about 5.0 million. The position value rose to about $91 million from about $63 million.

Jane Street increased its Coinbase stake to about 888,000 shares from about 778,000 shares. The filing valued the position near $155 million after about $176 million in Q4 2025.

Jane Street expanded Galaxy Digital holdings to about 1.5 million shares from about 17,000 shares. The filing valued the stake at nearly $28 million, up from about $380,000.

The quarter-end filing covered U.S. equity positions and certain ETF holdings only. It excluded swaps, futures, and other instruments.

Reuters reported Jane Street posted “record” Q1 trading revenue of $16.1 billion as markets swung. Reuters linked gains to artificial intelligence-related investments.

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