Ethereum Spot ETFs Pull in $1.42 B Over Nine Days, Driven Mostly by BlackRock

U.S. spot Ethereum exchange‑traded funds (ETFs) have logged $1.42 billion in net inflows over nine straight trading days, narrowing the daily inflow gap with Bitcoin ETFs to just $16.5 million on August 28. BlackRock’s ETHA fund alone absorbed $1.02 billion, or roughly 72% of all category flows, and posted net inflows on every day of the streak.

Flow dynamics and concentration

The inflow streak began on August 17, when Ethereum ETFs attracted a fraction of the capital flowing into Bitcoin ETFs. Over the next sessions the ratio narrowed steadily, reaching parity in daily inflows by August 28 (Ethereum $225.8 million vs. Bitcoin $242.3 million). BlackRock’s dominance is unusual; during the initial wave of spot Ethereum ETF inflows in mid‑2025, the firm held 40‑50% of category flows, compared with the current 72%.

Institutional distribution advantage

BlackRock’s iShares platform serves more than 30,000 registered investment advisors in the United States and operates a model‑portfolio program that automatically rebalances client allocations. When the model adds or increases an ETH allocation, every subscribed client account purchases ETHA shares simultaneously, creating large, coordinated inflows that other issuers cannot match.

Macro backdrop

Research from Bitwise Europe links the inflows to a rise in cross‑asset risk appetite following the U.S. Treasury’s announcement on August 19 to double long‑dated bond buybacks. The policy move compressed long‑end yields, weakened the dollar and revived a “debasement trade” that also boosted Bitcoin earlier in the month.

Price performance vs. inflows

During the nine‑day period, Ethereum’s price rose about 5%, from roughly $2,350 to $2,477. By contrast, Bitcoin gained around 15% on $2.8 billion of ETF inflows, while assets such as XRP, Solana and Zcash posted much larger percentage gains on smaller inflow amounts. Analysts suggest the Ethereum inflows are acting as a slow‑accumulation allocation rather than a conviction bet on outperformance.

Spot volume disconnect

Spot trading volume for ETH has fallen to its 16th percentile year‑on‑year since the rally began on August 19, indicating that the majority of market participants are not actively trading. Authorized participants create ETF shares by buying ETH on the spot market, but much of this activity occurs off‑exchange (OTC desks, dark pools) and may not be reflected in public volume data. On‑chain transfer volume has not shown a corresponding spike, suggesting limited broader market participation.

Technical context

Ethereum is testing its 200‑week moving average around $2,450‑$2,500, a level that has historically acted as a floor in bull markets and a ceiling in bear phases. Approximately 1.1 million ETH are accumulated near this level, potentially providing resistance.

Outlook

The continuation of inflows into September will help determine whether the current buying is a macro‑driven trade or a structural shift in institutional allocation. A rise in spot volume would be needed to sustain price momentum if ETF inflows pause.