BlackRock’s IBIT leads $999M in US spot Bitcoin ETF inflows

Institutional money keeps finding its way into Bitcoin, and the numbers from September 21 make that point hard to argue with. US spot Bitcoin and Ether ETFs pulled in a combined $1.269 billion in net inflows on that single trading day, with BlackRock’s iShares Bitcoin Trust leading the charge. IBIT alone attracted approximately $618 million, a figure that puts it comfortably ahead of the rest of the field. Fidelity’s FBTC has consistently ranked as the second major beneficiary, but on this day BlackRock’s product wasn’t just winning the race, it was lapping it. Bitcoin ETFs are becoming the institutional on-ramp of choice Cumulative net inflows since the January 2024 launch have now reached approximately $55 billion to $55.8 billion. Total assets under management across US spot Bitcoin ETFs have surpassed $102.5 billion, with some estimates putting the figure closer to $105.6 billion by late September 2026. Bitcoin’s price on September 21 was trading above $81,000, with intraday levels touching near $82,000. The week leading up to September 21 was not uniformly positive. Weekly Bitcoin ETF inflows had been modest, around $6.2 million, before the single-day rebound effectively reset...