Highlights

  • US spot Bitcoin ETFs recorded $13.29 million in net outflows on September 11, a fourth consecutive day of outflows.
  • The four-day stretch has pulled roughly $450-460 million out of Bitcoin ETFs since September 8.
  • Spot Ether ETFs took in $216 million on the same day, led by BlackRock's ETHA with $149 million.
  • Morgan Stanley's MSBT was the lone Bitcoin ETF posting inflows, adding $3.76 million.
  • Analysts frame the split as capital rotating within crypto ETFs rather than money leaving the asset class outright.

US spot Bitcoin ETFs recorded $13.29 million in net outflows on September 11, marking a fourth consecutive day of redemptions, according to SoSoValue data. Morgan Stanley's MSBT was the only Bitcoin fund to post inflows that day, adding $3.76 million, while the rest of the group bled assets. Spot Ether ETFs moved in the opposite direction, pulling in $216 million in net inflows on the same day, with BlackRock's ETHA leading at $149 million. The divergence extends a pattern seen through the prior three trading sessions, in which Bitcoin ETFs shed a combined $450 million or more while Ether products held up comparatively well.

A Fourth Day of Bitcoin Outflows

The four-day Bitcoin ETF outflow streak began September 8 and has now pulled roughly $450 million to $460 million out of the group, based on SoSoValue's running tally, though at least one competing tracker put the September 11 figure closer to 3,391 BTC (about $267 million) redeemed — underscoring how flow estimates can vary depending on a provider's cutoff time and which share classes are included. Even with the streak, Bitcoin ETFs remain a roughly $97 billion to $99 billion asset class dominated by BlackRock's iShares Bitcoin Trust, Fidelity's Bitcoin fund, Grayscale's converted trust, and Ark 21Shares' product, and a few hundred million dollars of net redemptions represents a small fraction of total assets under management. Ether ETFs are a smaller but faster-growing category, and September 11's $216 million haul was one of the stronger single-day prints of the past month. The split has occurred against a backdrop of position-squaring ahead of the Federal Reserve's next policy meeting, with rate-sensitive investors adjusting exposure across both funds in the days leading up to fresh inflation data.

Related: Crypto Funds See $3.2B Inflows, Best Week Since Oct 2025

What's Driving the Split

For traders, the split matters more as a signal of positioning than as a verdict on Bitcoin's health. Sustained ETF outflows can weigh on spot price by removing a steady source of institutional demand, but a four-day, sub-$500 million stretch is well within the range of normal weekly variance for a market that has absorbed multi-billion-dollar swings in both directions this year. Ether's outperformance is more notable: it suggests some allocators are treating the two assets as substitutes within a fixed crypto allocation rather than adding fresh outside capital to the category, a dynamic that shows up as one leg gaining while the other bleeds. That reading is consistent with options positioning ahead of the Fed's next decision, where traders have shown a preference for upside exposure to Ether relative to Bitcoin. If the rotation persists, it could pressure Bitcoin's dominance metrics even without a broad risk-off move, marking a shift from earlier this year when Bitcoin ETFs consistently outpaced their Ether counterparts in raw dollar terms. Either way, the numbers are still small relative to the roughly $150 billion combined in US spot crypto ETF assets, and a reversal in either direction remains plausible within days given how sensitive flows have been to short-term rate expectations.

What Comes Next

The next flows to watch land after the Fed's upcoming policy meeting, when positioning built over the past week typically either extends or unwinds sharply. A fifth straight day of Bitcoin outflows would be the longest streak since the fund group's last extended slide, while a snapback above $100 million in a single day would suggest the rotation into Ether was a temporary reallocation rather than a durable shift in institutional preference. Whichever way the next few sessions break, SoSoValue's daily prints remain the fastest read on whether institutions are still adding to crypto ETFs overall or simply reshuffling an existing pool of capital between the two largest funds.

FAQ

How much did Bitcoin ETFs lose on September 11?
US spot Bitcoin ETFs recorded $13.29 million in net outflows on September 11, the fourth straight day of redemptions, according to SoSoValue.

How much did Ether ETFs gain the same day?
Spot Ether ETFs pulled in $216 million in net inflows on September 11, led by BlackRock's ETHA with $149 million.

Which Bitcoin ETF bucked the outflow trend?
Morgan Stanley's MSBT was the only Bitcoin ETF to post inflows on September 11, adding $3.76 million.

Does this mean money is leaving crypto altogether?
Not necessarily. Analysts describe the pattern as capital rotating between Bitcoin and Ether ETFs rather than outright de-risking, since Ether's inflows partly offset Bitcoin's outflows on the same day.