Is Ethereum taking lead as Bitcoin ETF outflows hit $463 million?

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Ethereum ETF inflows outpace Bitcoin demand

Institutional demand for Bitcoin weakens sharply

U.S. spot Bitcoin ETFs recorded around $462.7 million in net outflows between September 8 and September 11, sharply reversing the strong demand seen at the beginning of the month. SoSoValue data show that investors pulled roughly $46.6 million from the funds on September 8, with outflows accelerating to $120.2 million the following day.

The heaviest pressure came on September 10, when Bitcoin ETFs lost around $282.6 million in a single session. Outflows slowed to $13.3 million a day later, but that was not enough to end a four-session streak of negative flows.

ARK Invest and 21Shares’ ARKB suffered the largest losses over the period, with around $234 million leaving the fund. Grayscale’s GBTC saw another roughly $129 million in outflows. At the same time, Bitcoin slipped from around $79,000 toward $77,000, adding to signs that institutional demand has weakened after a strong start to September.

Ethereum ETFs move in the opposite direction

Flows into Ethereum ETFs were considerably stronger. The week began with roughly $24.3 million in outflows on September 8, but the funds returned to positive territory a day later with about $34.7 million in fresh capital.

The biggest reversal came on September 11, when U.S. spot Ethereum ETFs attracted approximately $216.4 million in net inflows in a single session. That was enough to bring the weekly result for Ethereum funds to roughly $197 million in net inflows.

BlackRock’s fund attracted a significant share of the fresh capital. The divergence suggests that institutional investors are not simply reducing their overall exposure to crypto, but are becoming more selective in how they allocate capital between the largest digital assets.

Flows point to a temporary shift toward Ethereum

The contrast is particularly striking given Bitcoin’s strong start to September. Just one week earlier, U.S. spot BTC ETFs had attracted almost $1 billion in net inflows before the trend reversed sharply and capital began leaving the funds.

Ethereum, by contrast, managed to attract fresh money despite an unstable macroeconomic backdrop. U.S. inflation accelerated, strengthening expectations of a Fed rate hike and increasing pressure on risk assets. Against that backdrop, resilient Ethereum ETF inflows may point to a temporary rotation of institutional capital within the crypto market rather than a broad retreat from digital assets.

It is still too early to call this a lasting shift in investor preference. Bitcoin continues to dominate the ETF market by size, and several days of outflows do not establish a durable trend on their own. Still, the swing from nearly $1 billion in weekly inflows to $462.7 million in outflows, while Ethereum funds remain in positive territory, is becoming an important signal ahead of the Fed’s September 16 decision.

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