ETH gained roughly 8.8% in September 2026, rising from its August-end level of about $2,470 to close near $2,680. The advance extended August’s rally and pushed ETH decisively above the psychologically important $2,500 level, with the token briefly exceeding $2,750 and reaching a monthly high near $2,775.

Much of the move occurred during the second half of September, as ETF flows flipped from outflows to inflows. Global products recording roughly $900 million in net inflows, half of the $1.81 billion of inflows in August, the third consecutive monthly inflow, with most of it (~$0.84 billion) coming in the six trading days from Sept. 18 to Sept. 25.

ETH treasury-company purchases eased to roughly $259 million in September 2026 (down ~2% MoM) after August's $265 million. Even after August's rebound, activity sits nearly 96% below the $7.2 billion peak recorded in August 2025. BitMine remained the largest source of demand and now holds over 4.9% of all ETH (with 5% as its stated goal).

Marc covers Ethereum, Bitcoin and their L2s. Previously led Ethereum and DeFi research at CoinShares.