Lowest Fees + Strongest Endorsement: BlackRock's Ethereum Staking ETF "Dimensional Reduction Strike"

Author: KarenZ, Foresight News

On March 12, 2026, Nasdaq listed a somewhat different crypto ETF: the Ethereum Trust ETF with staking yield functionality, “ETHB.”

This is BlackRock’s iShares Staked Ethereum Trust ETF, and it is the third crypto ETF launched by this global asset management giant.

On its first day of trading, ETHB recorded approximately $15.5 million in trading volume, and on the second day (March 13), about $76 million. At launch, the ETF’s size was around $100 million, and it has now grown to approximately $170 million.

Notably, many reports have dubbed BlackRock’s ETHB as the “first Ethereum Staking ETF in the U.S.” But the interesting part is: this isn’t the first Ethereum staking ETF in the U.S., but it is definitely the most significant one.

First, let’s clarify: What exactly is ETHB?

To understand ETHB, you need to first understand Ethereum’s “staking” mechanism. After Ethereum’s “Merge” in 2022, it adopted a proof-of-stake (PoS) consensus mechanism to secure the network.

Simply put: Lock ETH into the network to help validate transactions, and the system rewards you—similar to interest on a deposit—though the rate is dynamically determined by the network.

According to Ethereum Validator Queue data, the current annualized yield is 2.78%. This number isn’t particularly high, but for long-term ETH holders, it’s a tangible extra return. For institutional investors managing hundreds of millions of dollars in ETH exposure, missing out on staking rewards means real opportunity costs.

ETHB’s role is to: make this process compliant and productized, allowing ordinary investors to gain ETH price exposure while earning this “interest” through a regular securities account—without needing to research how to stake or select validator nodes.

How is ETHB’s fee structure designed?

Breaking down ETHB’s fee layers: the first layer is the management fee, which is 0.25% annually, with a promotional discount of 0.12% during the first 12 months or the first $2.5 billion in assets. This is consistent with ETHA’s 0.25%, but ETHA does not generate staking income to offset this cost.

This figure seems reasonable, but management fees are just the first layer of the fee structure.

The second layer involves staking rewards sharing. Of the staking rewards earned, 82% are distributed to ETF holders, while the remaining 18% go as staking fees paid to the trust sponsor and broker-dealer. The trust sponsor is iShares Delaware Trust Sponsor LLC under BlackRock, and the broker-dealer is Coinbase Inc. After receiving this fee, Coinbase is responsible for paying downstream validators such as Figment, Galaxy Digital, and Attestant.

According to ETHB’s filing, 70% to 95% of ETH holdings are staked via the custodian Coinbase Custody Trust Company. As of March 12, the ETF held 41,164 ETH, with an 80% staking rate. However, after the scale increased on March 13, the active staking was not yet fully completed, with the current staking rate at 56%.

Assuming a $100 investment, with a staking rate between 70%–95%, and an annual yield of 2.78%, the staking rewards would be approximately $1.95 to $2.64.

• First deduction: 18% staking fee, leaving you with 82% of the rewards, roughly $1.60 to $2.17.
• Second deduction: management fee based on total holdings of $100, at a standard rate of 0.25%, or 0.12% during the promotional period.

Your final net annualized return:

• At standard fee: $1.60 – $0.25 = $1.35 to $2.17 – $0.25 = $1.92, corresponding to 1.35%–1.92% annualized.
• During promotional fee: $1.60 – $0.12 = $1.48 to $2.17 – $0.12 = $2.05, corresponding to 1.48%–2.05% annualized.

Therefore, the nominal staking yield of 2.78%, after two layers of deductions, results in an actual investor yield of approximately 1.35%–2.05% annually, depending on the staking rate and whether it’s within the promotional period.

This isn’t a cheap product, but it offers a compliant way to earn staking rewards without operating nodes or holding private keys. For regulated institutional players, this premium is meaningful.

BlackRock ETHB is not the first, but it takes the most standard approach

When the spot Ethereum ETF was approved in 2024, the SEC explicitly restricted the fund from staking its ETH holdings. The regulatory logic was that staking might constitute a securities offering. As a result, ETHA holders only gained pure ETH price exposure without additional staking income.

This restriction eased in 2025. In May 2025, the SEC’s Division of Corporation Finance issued guidance clarifying that “staking activities on certain PoS blockchain protocols do not constitute securities transactions under federal securities laws,” effectively opening a legal green light for Ethereum staking ETFs. Regulatory policies further relaxed afterward.

Before ETHB, two firms launched Ethereum staking ETFs following a different path:

REX-Osprey ETH + Staking ETF (ESK) was the earliest Ethereum staking ETF product listed in the U.S., jointly launched by REX Shares and Osprey Funds on September 25, 2025, on the Cboe BZX Exchange.

Unlike products like IBIT, ETHA, and ETHB, which follow the “1933 Act” route (filing S-1 registration as a commodity trust or spot ETP, and applying for 19b-4 rule changes with the exchange, requiring dual approval), ESK chose the framework of the 1940 Investment Company Act—the standard regulatory framework for traditional mutual funds, most stock and bond ETFs.

However, the 1940 Act prohibits direct holding of cryptocurrencies. REX-Osprey’s solution was to establish a wholly owned Cayman Islands subsidiary (REX-Osprey ETH + Staking Cayman Portfolio S.P.), which holds ETH and performs staking operations. The main fund gains exposure to ETH prices and staking rewards indirectly through this structure. This clever setup bypasses SEC restrictions on commodity ETFs, enabling compliant staking.

Grayscale’s Ethereum Staking ETF (ETHE) took an “upgrade” approach. Its predecessor, the Grayscale Ethereum Trust, was established in 2017. After Ethereum’s spot ETF approval in 2024, it converted into an ETF listed on NYSE Arca, governed by U.S. Securities Act of 1933.

ETHE activates staking by submitting a revised 19b-4 rule change request to the SEC, seeking permission for the listed Ethereum ETP to include staking features within the existing framework. Compared to a full S-1 approval for a new product, modifying an existing product’s rules is much faster. Grayscale completed the staking activation about five months before BlackRock (around October 2025).

But this “patch” approach has costs: ETHE inherited the high management fee of its trust structure—2.50% annually—much higher than ETHB, making long-term holding more expensive.

BlackRock’s ETHB chose a third path: a fully compliant new registration. In December 2025, BlackRock submitted a new S-1 registration for ETHB, simultaneously applying for a 19b-4 rule change with Nasdaq. This full product approval process took only about three months, and ETHB was successfully listed in March 2026.

BlackRock did not take the ESK “detour” nor rely on Grayscale’s “upgrading” method. Instead, it chose the most compliant, transparent route—most suitable for institutional capital. The key advantage: the lowest fee—0.25% annual management fee (0.12% promotional), significantly lower than ETHE and also better than ESK, making it a major competitive edge for attracting institutional investors.

ETHB is established primarily under the “1933 Securities Act,” with some simplified disclosure arrangements as a “Emerging Growth Company” (EGC), but it is not bound by the “1940 Investment Company Act,” unlike ESK.

Summary

Since Ethereum shifted from PoW to PoS, it has become an asset that can generate “yield upon holding.” But for most traditional finance participants, the barriers to directly staking ETH—custody risks, operational complexity, and regulatory hurdles—render this yield path largely inaccessible.

ETHB packages this on-chain staking activity into a Wall Street–familiar vehicle.

For early entrants like ESK and ETHE, this might be a moment to remain cautious.