Institutional money keeps flowing into Ethereum, and the biggest asset manager on the planet is leading the charge. US spot Ethereum ETFs pulled in $101.7 million in early June, with BlackRock’s iShares Ethereum Trust (ETHA) accounting for $37 million of that haul.

That $37 million landed on June 8 alone, according to data from SoSoValue. For context, the entire Ethereum ETF complex saw $82.37 million in net inflows that same day, meaning BlackRock captured nearly half of all institutional demand in a single session.

BlackRock’s growing grip on Ethereum

ETHA has grown to hold roughly $6.5 billion in assets, making it the undisputed heavyweight among Ethereum spot ETFs.

The firm’s dominance isn’t limited to its original offering. Back in March, BlackRock launched ETHB, a staked Ethereum ETF that debuted with over $100 million in assets. The product introduces staking rewards on top of traditional spot exposure.

Other providers haven’t been sitting idle, but results are mixed. Fidelity’s FETH and Grayscale’s ETHE and ETH products saw variable flows during the same period. Some days positive, some days not.

The bigger picture for Ethereum ETFs

Spot Ethereum ETFs launched in July 2024. In less than two years, cumulative net inflows across the entire complex have reached the $9 to $11 billion range.

Daily flow data, however, tells a more nuanced story. SoSoValue tracking shows significant day-to-day volatility in ETF inflows. Adjacent days around June 8 saw mixed or even negative results, suggesting that institutional positioning is tactical rather than blindly bullish.

What this means for investors

The concentration of flows into BlackRock’s products carries implications for the broader competitive landscape. ETHA’s $6.5 billion in holdings gives it structural advantages in liquidity and tracking efficiency.

One risk worth watching: the concentration of Ethereum holdings in a handful of ETF issuers raises questions about centralization. If a significant percentage of staked ETH ends up controlled by three or four asset managers, it introduces governance dynamics that Ethereum’s original designers probably didn’t envision.

The $101.7 million in early June flows isn’t a record-breaking number on its own. But placed alongside cumulative figures approaching $11 billion and BlackRock’s expanding product suite, it paints a picture of institutional adoption that’s methodical rather than manic.