Bitcoin up 25 percent as ETF inflows surge, cumulative net outflows cut 66 percent

Bitcoin spot exchange-traded funds (ETFs) posted net inflows of $3.52 billion in August, the highest monthly performance this year.

Cointelegraph, a blockchain media outlet, reported on Sept. 2 that bitcoin rose about 25 percent in the same month, sharply reducing cumulative net outflows since the start of the year.

August’s result was a sharp improvement from July’s net inflows of $172 million. Bitcoin spot ETFs recorded their largest monthly inflow in 2026. Bitcoin also posted its strongest monthly gain since a 37.29 percent rise in November 2024. As a result, cumulative net outflows from bitcoin ETFs since the start of the year narrowed about 66 percent to $1.77 billion from $5.29 billion.

Inflows continued across most trading sessions. Bitcoin spot ETFs recorded net inflows on 16 of 21 trading days in August, including nine straight trading days of net inflows from Aug. 17 to 27. Total net assets rose about 31 percent to $99.61 billion at end-August from $76.29 billion at end-July. Over the same period, monthly trading volume increased about 49 percent to $58.63 billion from $39.37 billion.

The strong August momentum weakened in early September. Bitcoin spot ETFs posted net inflows of $216.7 million on Sept. 1, then switched to net outflows of $236.46 million on Sept. 2. That was the largest daily outflow since net outflows of $265.37 million on July 31.