CryptoOnchain
Ethereum ETF Outflows Slow as Selling Concentrates in BlackRock’s iShares Ethereum Trust
In December 2025, Ethereum spot ETFs recorded a net outflow of approximately $531 million. A key structural insight this month is the extreme concentration of outflows in a single fund. BlackRock’s iShares Ethereum Trust ETF alone accounted for roughly $532 million in net outflows, effectively explaining nearly the entire monthly ETF outflow for Ethereum. Meanwhile, other ETH spot ETFs exhibited far more neutral behavior, with some even posting modest inflows. This divergence indicates that institutional selling pressure was not broad-based, but instead driven by position adjustments within one dominant investment vehicle. Such behavior is typical during transitional market phases, where capital rotation and targeted de-risking replace indiscriminate risk-off selling across the entire ETF complex. From a structural perspective, the sharp slowdown in total outflows compared to November’s $1.41 billion, combined with the dominance of BlackRock’s iShares Ethereum Trust in December, points to a phase of seller concentration and potential exhaustion. Historically, this type of flow dynamic tends to align more with price stabilization and consolidation rather than a continuation of strong downside momentum. Importantly, the data does not yet confirm renewed institutional demand for Ethereum. Instead, it signals a shift from broad-based distribution toward selective deleveraging, led primarily by one large institutional product. As long as major funds such as BlackRock’s iShares Ethereum Trust ETF remain in net outflow territory, it remains premature to declare a definitive reversal in institutional positioning. In summary, December reflects cooling ETF-driven selling pressure, with BlackRock’s iShares Ethereum Trust acting as the principal source of outflows. Monitoring whether flows in this fund stabilize or turn positive will be critical for assessing Ethereum’s next institutional cycle.