Key Takeaways
- • Jane Street reduced Bitcoin ETF holdings by over 70% in Q1 2026, cutting IBIT positions by 71% to 5.9 million shares ($225 million) and FBTC by 60% to 2 million shares ($115 million), erasing approximately $800 million in Bitcoin exposure in 90 days.
- • The firm nearly doubled its exposure to Ether ETFs, adding $82 million in combined positions across BlackRock's iShares Ethereum Trust (ETHA) and Fidelity's Ethereum Fund (FETH) during the same quarter.
- • Jane Street divested 78% of its MicroStrategy (MSTR) holdings, reducing its stake from 968,000 shares ($145.9 million) to 210,000 shares ($27 million), signaling reduced conviction in Bitcoin-correlated equities.
- • The portfolio rebalancing reflects a broader institutional shift away from Bitcoin-linked products toward Ether-based vehicles, with other major players including Wells Fargo similarly increasing Ether exposure.
- • The moves are based on 13F SEC filings, which provide only a partial view of Jane Street's total trading book and cryptocurrency exposure across all asset classes.
Summary
Jane Street, the prominent Wall Street market maker, has executed a dramatic reallocation of its cryptocurrency portfolio in Q1 2026, slashing Bitcoin ETF holdings by over 70% while simultaneously doubling down on Ether-based funds. According to recently filed 13F disclosures, the firm eliminated approximately $800 million in Bitcoin exposure over the quarter, reflecting a significant strategic pivot away from the leading cryptocurrency toward its closest institutional competitor.
The specific reductions were substantial across flagship Bitcoin products. Jane Street's holdings in BlackRock's iShares Bitcoin Trust (IBIT) plunged 71% quarter-over-quarter to 5.9 million shares, valued at $225 million. The firm's position in Fidelity Wise Origin Bitcoin Fund (FBTC) suffered a steeper 60% cut, dropping to 2 million shares worth $115 million. This represented a comprehensive de-risking from the Bitcoin ETF space at precisely the moment when these products have continued to attract institutional capital.
In stark contrast, Jane Street materially increased its cryptocurrency exposure through Ether ETFs. The firm nearly doubled its stake in BlackRock's iShares Ethereum Trust (ETHA) while adding substantially to Fidelity's Ethereum Fund (FETH), collectively deploying an additional $82 million into Ether-linked products during Q1. This directional bet on Ethereum over Bitcoin suggests the firm's internal assessment has shifted regarding relative institutional demand and trading opportunities in the ethereum ecosystem.
Beyond direct ETF exposure, Jane Street also reduced its holdings in Michael Saylor's MicroStrategy (MSTR), a publicly traded proxy for Bitcoin exposure widely tracked by institutional investors. The firm cut its MSTR stake by 78%, from 968,000 shares in Q4 2025 to just 210,000 shares in Q1 2026, reducing its position value from $145.9 million to $27 million. This divestment reinforces the firm's broader retreat from Bitcoin-correlated assets.
The timing of Jane Street's moves aligns with increased institutional interest in Ether ETFs more broadly, with peers including Wells Fargo similarly reporting expanded Ether exposure earlier in 2026. However, 13F filings only capture equity and certain fund holdings, leaving Jane Street's full trading book and net cryptocurrency exposure through derivatives, direct holdings, and other instruments opaque to external observers.
The specific reductions were substantial across flagship Bitcoin products. Jane Street's holdings in BlackRock's iShares Bitcoin Trust (IBIT) plunged 71% quarter-over-quarter to 5.9 million shares, valued at $225 million. The firm's position in Fidelity Wise Origin Bitcoin Fund (FBTC) suffered a steeper 60% cut, dropping to 2 million shares worth $115 million. This represented a comprehensive de-risking from the Bitcoin ETF space at precisely the moment when these products have continued to attract institutional capital.
In stark contrast, Jane Street materially increased its cryptocurrency exposure through Ether ETFs. The firm nearly doubled its stake in BlackRock's iShares Ethereum Trust (ETHA) while adding substantially to Fidelity's Ethereum Fund (FETH), collectively deploying an additional $82 million into Ether-linked products during Q1. This directional bet on Ethereum over Bitcoin suggests the firm's internal assessment has shifted regarding relative institutional demand and trading opportunities in the ethereum ecosystem.
Beyond direct ETF exposure, Jane Street also reduced its holdings in Michael Saylor's MicroStrategy (MSTR), a publicly traded proxy for Bitcoin exposure widely tracked by institutional investors. The firm cut its MSTR stake by 78%, from 968,000 shares in Q4 2025 to just 210,000 shares in Q1 2026, reducing its position value from $145.9 million to $27 million. This divestment reinforces the firm's broader retreat from Bitcoin-correlated assets.
The timing of Jane Street's moves aligns with increased institutional interest in Ether ETFs more broadly, with peers including Wells Fargo similarly reporting expanded Ether exposure earlier in 2026. However, 13F filings only capture equity and certain fund holdings, leaving Jane Street's full trading book and net cryptocurrency exposure through derivatives, direct holdings, and other instruments opaque to external observers.
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