US spot Bitcoin ETFs pulled in $241 million in net inflows for the trading week ending October 2, 2026. That makes three positive weeks in a row.
BlackRock does the heavy lifting
The headline number hides a lopsided week. BlackRock’s iShares Bitcoin Trust (IBIT) took in $450 million on its own, according to data compiled largely from SoSoValue, with additional tracking by Farside Investors.
That brings IBIT’s cumulative figure to $65.73 billion. It remains the clear heavyweight of the group, and this week it outperformed the entire category’s net total by a wide margin.
ARK 21Shares’ ARKB added a more modest $25.52 million. The fund’s cumulative total now sits at $1.4 billion.
Fidelity’s FBTC had the opposite experience. It posted the largest outflows of the week, shedding $168 million, though its cumulative asset base still stands at $10.9 billion.
Do the arithmetic and something stands out. IBIT and ARKB together brought in more than the week’s net total, even after FBTC’s losses, which implies the remaining funds were net negative as a group.
The bigger picture: assets, market share and a rebound
Total net assets across all spot Bitcoin ETFs reached approximately $108.89 billion. That figure represents 6.42% of Bitcoin’s total market capitalization.
Cumulative net inflows since the funds launched in January 2024 now total approximately $57.79 billion.
Earlier in 2026, the sector absorbed heavy redemptions, leaving a net outflow deficit of about $5.8 billion by mid-July. The recovery started in August and picked up speed in September. The week ending September 25 delivered a record inflow of $2.4 billion, and the positive trend has now carried into October.
Compared with that $2.4 billion week, $241 million is a step down. Still, the direction matters more than the size for a market that spent months watching money walk out the door.
What to watch from here
The concentration in IBIT says something about how returning money behaves. If IBIT keeps absorbing the bulk of new money while others see redemptions, the headline numbers may overstate how broad the renewed appetite really is.
At 6.42%, ETF holdings are large enough that sustained buying or selling through these vehicles can influence the broader market’s supply and demand balance. Steady inflows could help support prices, but a return to heavy redemptions would put the same mechanism into reverse, as the first half of the year demonstrated.
For now, the data tells a fairly simple story. After a rough start to 2026, money is flowing back into spot Bitcoin ETFs, cumulative inflows have recovered to approximately $57.79 billion, and BlackRock remains the main beneficiary of that return.
