September inflows into ETH ETFs reached about 30 times the amount of newly issued ETH, according to Real Vision crypto market analyst Jamie Coutts. In a Sept. 16, 2026 post, Coutts said the flows equaled about 0.63% of ETH's market capitalization, roughly twice Solana's inflow intensity and three times Bitcoin's. Bitcoin still holds the largest share of the crypto ETF market, but Ethereum's lower issuance after its shift to proof-of-stake, along with ETH burned through EIP-1559, means ETF demand is drawing on existing supply. The flows could make institutional demand an important market factor, although interest rates, risk appetite and broader crypto-market conditions remain significant influences on prices.