Jane Street Nearly Octuples Fidelity Bitcoin ETF Stake in Q3 While Trimming BlackRock IBIT Position

Jane Street dramatically shifted its Bitcoin ETF allocations in the third quarter, nearly octupling its position in the Fidelity Wise Origin Bitcoin Fund while cutting its BlackRock iShares Bitcoin Trust holdings. The trading firm's FBTC share count climbed from roughly 887,000 at the end of June to 7.01 million shares by September 30, lifting the stake's reported value to approximately $509 million.

Despite reducing its IBIT share count by 19%, Jane Street's BlackRock position actually grew in dollar terms due to a higher Bitcoin price over the quarter, with the stake's reported value rising to $957 million from $828 million. The moves, disclosed through 13F filings with the SEC, reflect a notable rebalancing between the two largest U.S. spot Bitcoin ETFs by a firm that ranks among the most active participants in that market.