BlackRock’s Ether Staking ETF Logs 20 Straight Inflow Days—$308M In, Zero Out, as 75% of ETH Is Staked

Blackrock Ether Staking ETF Draws $308M Over 20 Days as Assets Top $1B

BlackRock’s Ether Staking ETF is building a rare no-outflow streak. Between July 28 and Sept. 11, the BlackRock Ether Staking ETF (ticker: ETHB) recorded 20 consecutive inflow days totaling $307.72 million, with zero net outflow days in that span, according to SosoValue and BlackRock data cited in the source report.

20 days in, $308M up—no outflows

Demand picked up into late August and early September, with $42.64 million on Aug. 28 and $52.91 million on Sept. 2, per the same reporting. Since launching on Nasdaq on March 12, ETHB has accumulated $830.67 million in net inflows (SosoValue). BlackRock data in the report puts ETHB’s net assets at roughly $1.05 billion after about six months.

Image source: checkcryptonews.com · Source

What makes ETHB different: staking 70%–95% of holdings

Unlike a standard spot ether ETF, ETHB stakes between 70% and 95% of its ETH, according to the source citing BlackRock data. As of Sept. 11, the fund held about 313,789 staked ETH (valued at $802.9 million) representing 74.55% of assets, and 107,128 ETH (valued at $274.1 million) remained unstaked. The report notes a 30‑day staking rewards rate of 1.52% and a 30‑day average daily trading volume of approximately 566,753 shares, based on BlackRock data.

ETHB vs. ETHA: size still matters

BlackRock’s flagship spot ether ETF, ETHA, remains the larger institutional vehicle. The report cites roughly $13 billion in net inflows and about $9.11 billion in net assets for ETHA. That gap suggests staking exposure is complementing, not replacing, traditional spot demand, per the source’s framing.

What this could mean for ETH liquidity

The source argues that staking ETFs add structural demand for ether and can remove a portion of ETH from readily tradable supply when staked. If inflows continue into ETHB and larger spot products such as ETHA, the report suggests this combination could tighten liquid supply and be supportive for price over time. It also cautions that ETHB is smaller than ETHA and that macro conditions, crypto risk appetite, and broader ETF flows may dominate short‑term moves.