Ether ETF outflows in October and their impact on Ethereum demand

Ether ETF flows fall

Spot Ether exchange-traded funds (ETFs) experienced their worst month of 2026, with $1.2 billion in net outflows in October. After substantial inflows of $1.85 billion in August and $832 million in September, outflows averaged around $357 million per week, with investors selling on every trading day except two through 22 October. This reversal reflects a sudden withdrawal by the two main buyers supporting marginal demand for ether.

ETFs nevertheless remain significant: they hold around 6.2 million ETH, representing combined net assets of $14.6 billion, comparable to the reserves of Bitmine Immersion Technologies. The simultaneous contraction of these two participants creates a gap that adoption flows, however numerous, do not automatically fill. Their combined withdrawal weakens the order book, increasing downward pressure on the price of ether.

Bitmine and the 5% supply ceiling

Bitmine Immersion Technologies, another pillar of ether demand, is approaching its self-imposed ceiling of 5% of total supply, as Tom Lee confirmed. Over the last two weeks the company bought only around 12,500 ETH, compared with more than 100,000 ETH per week on four occasions in April and May. This slowdown comes before the ceiling has been reached, indicating a gradual reduction in its purchases since 30 June 2025.

Ethereum issuance is not fixed: a burn mechanism adjusts supply according to actual network demand. Thus, even if Bitmine reduces purchases, total supply may decrease slightly through these burns. However, the absence of a buyer comparable in size to ETFs and Bitmine leaves the question of supply absorption open, particularly if fund flows do not turn positive again.

Understanding smart contracts

The market movements described take place within the broader framework of Ethereum smart contracts, which execute code autonomously when a transaction meets certain conditions. A contract retains the necessary information, applies its rules and relies on a wallet signature to authorise each action. Execution fees, measured in gas, are paid in ether and vary according to the complexity of the operation and network congestion.

These programs do not judge situations; they apply code strictly, even when it contains a defect. To access external data, they use oracles, and some contracts offer administrative update functions. Thus, the volatility observed in Ether ETFs and Bitmine's withdrawal are not only the result of human decisions, but also of automated interactions between contracts, wallets and validators that maintain consensus on the blockchain.