Jane Street, a prominent market maker, has reportedly shifted its focus from Bitcoin to Ethereum, sparking speculation about potential market impacts. The firm significantly reduced its Bitcoin-linked holdings in Q1 2026, including a 71% reduction in BlackRock's iShares Bitcoin Trust and a 60% cut in Fidelity's Wise Origin Bitcoin Fund. Meanwhile, Jane Street increased its Ethereum exposure, nearly doubling its position in BlackRock's iShares Ethereum Trust and adding to Fidelity's Ethereum fund, with combined additions estimated at $82 million. Analysts suggest this move could be strategic, as Ethereum's smaller derivatives market and lower ETF penetration might allow for greater price influence with less capital compared to Bitcoin. Ethereum's market cap stands at $273 billion, significantly smaller than Bitcoin's $1.6 trillion, potentially amplifying the impact of capital movements. At the time of reporting, Ethereum was trading at approximately $2,292, with minimal price change, while Bitcoin and XRP experienced gains.