US Spot Bitcoin ETFs Record $462.7 Million Weekly Outflow
A sharp reversal in investor sentiment saw Bitcoin funds shed millions while Ether ETFs maintained positive momentum.
US spot Bitcoin ETFs experienced a significant shift in investor sentiment this week, recording $462.7 million in net outflows. The downturn marks a sharp reversal after three consecutive weeks of net inflows, signaling a period of volatility for the digital asset's institutional vehicles.
According to data reported by Cointelegraph, the withdrawals were led by the ARK 21Shares Bitcoin ETF, which saw $234.2 million leave the fund, and Grayscale's Bitcoin Trust, which recorded outflows of $129.1 million. Major institutional players were not immune to the trend; BlackRock's iShares Bitcoin Trust and Fidelity's Wise Origin Bitcoin Fund reported outflows of $52.5 million and $50.7 million, respectively. The selling pressure peaked on Thursday, when daily withdrawals hit $282.7 million, the largest single-day drop since July.
Market Context
This volatility follows what was the strongest three-week inflow run of 2026, suggesting a rapid pivot in market positioning. Despite the weekly slump, the broader monthly trend for September remains positive. Through Friday, spot Bitcoin ETFs maintained a net positive position for the month, with approximately $307.3 million in total net inflows.
Divergence in Crypto Assets
While Bitcoin struggled, Ether ETFs displayed a contrasting trend, attracting approximately $196.9 million in net inflows during the same period. This divergence suggests a tactical rotation within the cryptocurrency asset class, where investors may be shifting preferences toward Ether amid the instability affecting Bitcoin.
Institutional Implications
The sudden shift in flows indicates that Bitcoin's standing as a primary institutional asset is being tested by broader macroeconomic pressures. The movement of capital out of the largest US-listed funds suggests that institutional holders may be adopting a more defensive posture in response to current market conditions.
What's Next
Market observers are now watching to see if the September monthly surplus can withstand further weekly losses. While the core financial data confirms a significant weekly retreat, it remains to be seen if this is a short-term correction or a longer-term trend of institutional reallocation away from Bitcoin.