Jane Street’s first-quarter filings reveal a dramatic pivot from Bitcoin to Ethereum ETFs, but the full story may be buried in the fine print of complex derivatives trades.
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Jane Street Rotates $82 Million to Ether ETFs, Slashes Bitcoin Funds by 70%
A major quantitative trading firm reallocated approximately $82 million into spot Ethereum ETFs during the first quarter of 2026, slashing its holdings in leading Bitcoin funds by as much as 71 percent in a move disclosed in regulatory filings. The filings show Jane Street, one of Wall Street’s largest trading firms, executed a significant rotation between the top two crypto assets. The move comes amid a complex and divided institutional landscape for digital assets.
"The real risk for retail investors interpreting these moves is conflating a market maker’s portfolio management with directional conviction," one market structure analyst explained. "Copying the visible leg of a delta-neutral strategy without the invisible hedge is like following a recipe but skipping half the ingredients."
The firm’s Form 13F filing for the period ending March 31, 2026, revealed its stake in BlackRock’s iShares Bitcoin Trust (IBIT) was cut by roughly 71 percent to about $225 million. Its position in the Fidelity Wise Origin Bitcoin Fund (FBTC) was trimmed by 60 percent. In contrast, Jane Street nearly doubled its holdings in BlackRock’s iShares Ethereum Trust (ETHA) and boosted its stake in Fidelity’s FETH, funneling a combined $82 million into the ether-based products.
For Ethereum, a significant allocation from a firm with Jane Street’s profile could encourage other institutional players to look closer at ETH ETFs, which have trailed their Bitcoin counterparts in net flows. However, the trades may not signal simple bullishness, as they are likely part of a more complex, hedged strategy that is not fully visible in public filings.
The Delta-Neutral Wrinkle in 13F Filings
The dramatic shift in holdings may not be the straightforward directional bet it appears to be. Jane Street is known for sophisticated, market-neutral strategies, and these ETF position changes could be one leg of a larger, hedged trade. Form 13F filings only capture long equity and options positions, leaving out crucial parts of the picture like short positions, futures, swaps, or over-the-counter derivatives.
This means the rotation could be part of a delta-neutral trade, where the firm aims to profit from the relative performance of ETH versus BTC, or from funding rate arbitrage, rather than an outright bet on Ethereum’s price appreciation. The firm also increased its exposure to crypto-adjacent equities like Coinbase and Galaxy Digital while cutting its position in MicroStrategy by 78 percent, suggesting a broader portfolio restructuring.
A Divided Institutional Landscape
Jane Street's rotation was not the only significant institutional move in the first quarter. The same wave of 13F filings painted a conflicting picture of institutional sentiment toward crypto. While Jane Street pivoted to Ethereum, Harvard University’s endowment cut its IBIT stake by 43 percent and completely sold its $86.8 million position in BlackRock’s ETHA. Similarly, Goldman Sachs fully exited its XRP and Solana ETF positions and trimmed its Ethereum ETF exposure by 70 percent.
On the other side of the trade, Abu Dhabi’s sovereign wealth fund, Mubadala, increased its IBIT holdings by 16 percent to $566 million, continuing a steady accumulation streak. JPMorgan also raised its IBIT stake by 174 percent during the quarter. This divergence shows there is no single institutional consensus; instead, different firms are pursuing unique strategies, from tactical rotation and profit-taking to long-term strategic accumulation.
This article is for informational purposes only and does not constitute investment advice.
