BlackRock and Fidelity are quietly turning bitcoin ETFs into a two-firm market

BlackRock's IBIT and Fidelity's FBTC are attracting the vast majority of new bitcoin ETF money, leaving smaller funds increasingly sidelined as institutional investors consolidate around the industry's largest players.\nWhat to know : BlackRock’s iShares Bitcoin Trust and Fidelity’s Wise Origin Bitcoin Fund now dominate U.S. spot bitcoin ETFs, regularly capturing the majority of new inflows. Despite a roughly 29% year-to-date decline in bitcoin and waves of ETF redemptions, IBIT and FBTC have often acted as stabilizing forces, attracting capital even when rivals see outflows. The market is shifting toward a winner-take-most structure in which scale, liquidity and distribution networks favor BlackRock and Fidelity, leaving smaller issuers with minimal influence on overall flows.