BTC ETFs Log Heavy Inflows as ETH Funds Rebound on September 10
U.S. spot cryptocurrency platform-traded funds saw a robust intake on September 10, 2025, led by BTC products that posted one of their larger daily net inflow prints in recent weeks. Depending on the data vendor and reconciliation timing, net creations into spot BTC ETFs were estimated between about $741.5 million and roughly $757 million. Spot ETH ETFs also turned positive later than a patchy run, with approximately $171–172 million in net inflows. The move arrived as broader digital-asset markets steadied, with traders pointing to improving liquidity conditions and a modest pickup in risk appetite ahead of key macro updates later this month.
Fund breakdown and market drivers
Among the BTC cohort, Fidelity’s FBTC drew the largest net inflow at roughly $299 million, followed by BlackRock’s IBIT near $211 million. ARK 21Shares’ ARKB added around $145 million, while Bitwise’s BITB contributed approximately $44 million. Grayscale’s GBTC registered a smaller positive day, close to $9 million, and several smaller issuers posted modest gains or flat prints. Flows were accompanied by firmer secondary-market volumes across the complex, a dynamic market participants often read as evidence of renewed allocator engagement—particularly among wealth channels that model ETF exposure as a liquid, operationally simple way to add or adjust changes.
On the ETH side, the day’s rebound suggested improving sentiment toward ETH exposure later than a series of mixed sessions. Allocators cited a blend of factors behind the shift, including relative-value positioning later than ETH underperformed BTC in recent weeks, the appeal of cleaner basis opportunities, and an appetite to re-risk into large-cap crypto while avoiding single-asset concentration. While it is too ahead to call a sustained rotation, the breadth of positive prints across the new that investors are testing adding duration and beta beyond BTC, albeit selectively and with an eye on liquidity.
Methodology differences and what to watch
Headline totals differed slightly across widely followed trackers, largely due to when issuers finalize their reports and how late-day adjustments are treated. Some aggregators incorporate intraday updates and revise totals as sponsor data settles; others publish an end-of-day snapshot and reconcile later. These methodological nuances can produce small gaps in the summed figure even when fund-by-fund entries are directionally aligned. For practitioners, the signal tends to come less from the exact dollar number and more from the persistence, breadth, and composition of flows—whether demand is concentrated in one or two vehicles or distributed across the lineup, and whether inflows coincide with improving liquidity and price resilience.
Looking ahead, investors will watch whether positive prints persist through the remainder of the week and into month- and quarter-end rebalancing. Additional catalysts include macro data releases, policy communications, and any sponsor-level product developments that could affect fee competition or market-making quality. One strong session does not constitute a trend, but the September 10 results—strong in BTC and constructive in ETH—have put ETF flows back near the forefront of crypto market narratives.
