Bitcoin ETF Market Dominated by BlackRock (BLK) and Fidelity with 90%+ Share

The article says the U.S. spot Bitcoin ETF market has become highly concentrated, with BlackRock’s IBIT and Fidelity’s FBTC capturing more than 90% of major inflows on peak trading days in 2026. On January 14 alone, the two funds took in $773.8 million of the $840.6 million total Bitcoin ETF inflows. The piece argues that liquidity, issuer credibility, and distribution networks are driving institutional capital toward these two products, while smaller rivals such as VanEck, Franklin Templeton, Ark, Bitwise, and others are seeing only modest flows. Despite Bitcoin being down about 29% year-to-date, IBIT has remained relatively resilient during drawdowns. The market implication is that spot Bitcoin ETF competition is effectively becoming a winner-takes-most structure, reinforcing BlackRock and Fidelity’s dominance in institutional Bitcoin exposure.