U.S. Spot Bitcoin, Ether ETFs Draw $1.1 Billion in Weekly Inflows, With Nearly 80% Concentrated in One Day

U.S. spot Bitcoin and Ether exchange-traded funds drew a combined $1.1 billion in net inflows last week, with nearly 80% of the total concentrated in a single day.

CoinMarketCap data released on Sept. 8 showed spot Bitcoin ETFs posted net inflows of $968.9 million from Aug. 31 to Sept. 4, while spot Ether ETFs took in $130.3 million. Combined net inflows for the two assets totaled $1.1 billion, down 32.8% from the previous week.

On Sept. 3 alone, the funds attracted $863.2 million, accounting for 78.5% of the week's total net inflows. That marked the largest combined daily net inflow for spot Bitcoin and Ether ETFs since Jan. 14.

The flow of funds was heavily skewed toward Bitcoin. Weekly net inflows into spot Ether ETFs plunged 82.3% from the previous week, and Ether's share of total ETF inflows fell to 11.9% from 45.0%.

Prices rose even as ETF inflows slowed. Based on CoinMarketCap opening prices, Bitcoin gained 2.77% during the period and Ether climbed 2.60%. Both assets had declined in the prior week.

Leverage in the Bitcoin derivatives market showed only limited expansion. In the week through Sept. 6, Bitcoin open interest fell 0.6% to $53.15 billion, while the funding rate slipped to 0.50 basis point from 0.54 basis point.

By contrast, buying demand in the spot market improved. Over the three trading days through Sept. 4, net taker flow totaled $294 million, indicating a buying bias. That compared with the previous week, when buying and selling pressure was nearly balanced, suggesting spot demand strengthened.