Spot Bitcoin ETFs attracted $2.4 billion in net inflows for the week ending September 25, their best week since October 2025. BlackRock dominated with its IBIT product absorbing approximately $1.2 billion, followed by Fidelity (FBTC) with $702 million and ARK 21Shares (ARKB) with $295 million. These three products accounted for over 90 percent of the weekly flows. Bitcoin briefly touched $87,000 before retreating to the $83,000 to $84,000 range, which cooled buying enthusiasm toward the end of the week. This momentum pushed year-to-date net flows back into positive territory at roughly $934 million, after a deficit of $5.8 billion in July.
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