Crypto

BlackRock and Fidelity Dominate U.S. Bitcoin ETF Inflows

Guavy AI Editorial Team Published September 29, 2026

Instruments

BTC

U.S. Bitcoin spot exchange-traded funds (ETFs) recorded significant inflows in the five trading sessions ended Sept. 25, totaling approximately $2.39 billion.

This marks their strongest weekly intake since October 2025 and sees investor demand concentrated in BlackRock's iShares Bitcoin Trust (IBIT) and Fidelity Wise Origin Bitcoin Fund (FBTC).

The two funds accounted for about 78% of total weekly inflows, with IBIT collecting $1.1576 billion and FBTC receiving $701.6 million.

Flows were strongest early in the week, reaching $999 million on Sept. 21 and $714.7 million on Sept. 22. However, inflows slowed to $346.9 million on Sept. 23, $190.7 million on Sept. 24, and $134.5 million on Sept. 25.

IBIT led the final session with $97 million in inflows, while FBTC added $49.3 million.

BlackRock and Fidelity Dominate U.S. Bitcoin ETF Inflows

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