US spot Bitcoin and Ethereum exchange-traded funds (ETFs) drew $872.2 million in a single day as both major cryptocurrencies broke through significant price levels. Bitcoin climbed above $81,000 while Ethereum topped $2,500, signaling a return of institutional demand after recent sessions of uneven flows.
Bitcoin ETFs attracted $730.8 million, marking the third-largest daily inflow of 2026. BlackRock's IBIT accounted for approximately $454 million, or about 62% of Bitcoin inflows, while ARK 21Shares' ARKB added $137.7 million and Fidelity's FBTC drew $74.4 million. Ethereum ETFs added $141.4 million, with BlackRock's ETHA and Fidelity's FETH combining for $137.2 million of that total.
The synchronized rally broadened beyond initial momentum driven by forced liquidations of short positions. According to market participants, the substantial ETF inflows absorbed significant sell orders and helped lift spot prices despite rising sovereign bond yields in the US and Japan.
Leverage and Derivatives Activity
The stronger spot market quickly extended into leveraged trading. Bitcoin futures open interest climbed above $57 billion, its highest level since May, while more than $260 million in short positions were liquidated during the advance—the largest short squeeze since August 21.
However, the elevated leverage presents risks. A sudden reversal in ETF demand could trigger another round of forced selling and volatility.
Recent Flow Volatility
Bitcoin ETFs showed significant swings in recent days, shifting from a $236.5 million outflow on September 1 to a $101.1 million inflow the following day before the $730.8 million surge. Ethereum ETFs posted a $48.2 million outflow on September 2, ending a 12-session inflow streak, before reversing sharply.
Market analysts noted that while the latest flows offer a stronger demand signal than short covering alone, recent sessions demonstrate how quickly institutional positioning can change. Sustained inflows would provide deeper spot demand as leverage rebuilds, while another reversal could leave the latest surge appearing as another sharp swing in an increasingly volatile market.
