Jane Street sharply reduced its Bitcoin ETF exposure in the first quarter of 2026, cutting reported holdings in BlackRock’s IBIT and Fidelity’s FBTC while increasing positions in Ether ETFs and several crypto-linked equities. The move has revived speculation that one of the market’s largest trading firms may have been a major force in Bitcoin’s recent price dynamics — and that a lighter reported position could remove a key overhang for BTC.
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