Jane Street Expands Fidelity Bitcoin ETF Holdings And Trims BlackRock

Trading giant Jane Street restructured its cryptocurrency exchange-traded fund portfolio in the third quarter, dramatically increasing its stake in Fidelity's fund while pulling back on BlackRock's offering. The firm expanded its share count in the Fidelity Wise Origin Bitcoin Fund to over seven million by the end of September, marking a nearly eightfold jump from the close of June.

Simultaneously, Jane Street reduced its holdings in BlackRock’s iShares Bitcoin Trust ETF by nineteen percent, dropping to 20.22 million shares. Despite holding fewer shares in the BlackRock fund, a higher share price pushed the reported value of that specific stake up to $957 million. The Fidelity position was valued at $509 million at the end of the quarter, according to corporate filings.

Beyond these two major funds, the trading firm made additional adjustments across its crypto portfolio. It added nearly nine million shares of the ARK 21Shares Bitcoin ETF and more than doubled its position in BlackRock’s iShares Ethereum Trust ETF. Other major financial institutions also adjusted their holdings during the same period, with JPMorgan Chase increasing its BlackRock Bitcoin ETF shares while nearly eliminating its direct holdings in the Ethereum fund. Meanwhile, another firm, Laurore, reduced its own BlackRock Bitcoin ETF holdings by thirty-three percent.

Jane Street multiplied its Fidelity Bitcoin ETF holdings nearly eightfold while trimming its BlackRock stake.

Market Adjustments Highlight Portfolio Shifts

The third-quarter filing data also highlighted activity from other large institutions. Barclays increased its stake in BlackRock’s product, and banking institutions continued to manage varied positions across digital asset funds and related corporate equity during the period.

Why it matters

These shifts reflect how major institutional participants rebalance their exposure to digital assets through regulated financial products. Changes in portfolio allocations by large trading firms and banks influence market dynamics for spot exchange-traded funds, providing insight into institutional strategy across major cryptocurrencies.