US spot bitcoin exchange-traded products (ETPs) closed the week of September 14–18, 2026, barely in positive territory after a late surge in demand. Data compiled by SoSoValue showed that investors allocated $433 million to these listed bitcoin funds on Friday, September 18, 2026.
That single session was large enough to offset earlier withdrawals and leave the group with a net weekly inflow of about $6.2 million.
The week was anything but quiet. Monday opened with roughly $160 million in creations. Tuesday and Wednesday then reversed course, with combined redemptions near $746 million.
Thursday brought a partial recovery of about $159.5 million, leaving the products still deeply negative heading into the final session.
Friday’s $433 million intake—the strongest daily figure since September 3—closed most of that gap and produced the slim weekly surplus.
Fidelity’s Wise Origin Bitcoin Fund, ticker FBTC, dominated the Friday rebound.
It accounted for approximately $310.7 million, or more than 70 percent of the day’s net creations.
BlackRock’s iShares Bitcoin Trust (IBIT) followed with about $108.4 million.
Together the two vehicles supplied nearly 97 percent of Friday’s inflow.
Smaller products from Bitwise, VanEck, and ARK 21Shares posted modest positive flows, while several other funds were essentially flat.
Over the full five sessions the ranking looked different. IBIT still led the week with roughly $121 million in net inflows.
FBTC finished second at about $80 million.
Other funds collectively lost more than $194 million, which is why the category as a whole finished only $6.2 million above zero.
That net result is modest compared with the $463 million that left the same products the prior week, yet it was enough to avoid a second consecutive negative week.
Assets under management across the US spot bitcoin ETFs stood near $102.5 billion after Friday’s activity, equal to about 6.29 percent of bitcoin’s market capitalization.
Cumulative net inflows since launch remain around $55.16 billion.
Trading volume also picked up, with weekly turnover rising sharply from the holiday-shortened prior period.
The concentration of Friday’s buying in two large issuers suggests the rebound was not yet broadly distributed.
Midweek selling had coincided with policy headlines, including a Federal Reserve rate decision and legislative developments in Washington.
The late-week recovery showed that institutional channels can still absorb size when sentiment turns, but the razor-thin weekly total underscores how quickly flows can swing.
Market participants will watch the next sessions for confirmation.
A single large day can mask underlying caution; consistent demand across more issuers would carry more weight. For now, the publicly traded bitcoin products ended the week in the black, thanks almost entirely to Friday’s concentrated buying.
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