BlackRock is ready for a one-for-three reverse split on its iShares Ethereum Trust ETF (ETHA) in an effort to improve trading efficiency while not affecting the value of investors' holdings. The reverse split will be effective October 6, with a record date of October 5, according to a filing with the US Securities and Exchange Commission (SEC).

Under the reverse split, every three ETHA shares will be consolidated into one new share. The number of shares that the investors own will be reduced, but the NAV would be proportionately adjusted so that the total value of each investor's holding remains the same. Any fractional shares generated as part of the process will be redeemed for cash, potentially subjecting some investors to tax liabilities, according to the SEC filing.

Reverse Split Aims to Improve Trading Efficiency

BlackRock did not provide a particular reason for the reverse split. However, the primary objective is to cut trading fees by narrowing the ETF's bid-ask spread, said Bloomberg Senior ETF Analyst Eric Balchunas. "This will lower cost to trade from 7bps to 2bps-ish," Balchunas wrote on social media. "Gotta love how ETF issuers consider a 7bp spread a PROBLEM and are adjusting to cut it to 2bps."

A reverse split can enhance trading efficiency and lower transaction costs for investors by narrowing the bid-ask spreads of lower-priced ETFs. ETHA has been following this year's price trend of Ethereum in a downward direction. The ETF is currently trading at about $14 a share, down by around 40% YTD due to a drop in Ethereum prices.

What the Change Means for Investors

Importantly, a reverse split will not impact the ETF's investment policy, Ethereum holdings or full assets under management (AUM). Rather, it adjusts the number of shares that are outstanding and their respective price. Despite the recent price drop, ETHA is still the biggest spot Ethereum ETF, holding over $5 billion in AUM, while Grayscale remains the second-largest Ethereum ETF.

Reverse splits are not uncommon in crypto ETFs. Grayscale did similar reverse splits for its Bitcoin Mini Trust and Ethereum Mini Trust in November 2024, raising the NAV per share by five times and 10 times, respectively.

The announcement arrives at a time when the institutional demand for Ethereum ETFs has cooled in 2026. BlackRock has added to its lineup of Ethereum ETFs with the iShares Staked Ethereum Trust ETF, which was launched in March 2026, offering investors both staking and non-staking Ethereum ETFs.

FAQs:

1. What is BlackRock's ETHA reverse split?

BlackRock is implementing a one-for-three reverse split, meaning every three existing ETHA shares will become one new share. The total value of an investor's holdings remains unchanged because the share price increases proportionally.

2. Why is BlackRock conducting a reverse split?

Although BlackRock has not officially explained the move, Bloomberg ETF analyst Eric Balchunas said the higher share price should narrow bid-ask spreads, reducing trading costs from around 7 basis points to roughly 2 basis points.

3. Will the reverse split affect my investment value?

No. The reverse split changes only the number of shares outstanding and the price per share. The ETF's assets, Ethereum holdings and your overall investment value remain the same, excluding any cash paid for fractional shares.

4. What happens to fractional ETHA shares after the split?

Fractional shares created during the reverse split will not be issued. Instead, they will be redeemed for cash and credited to investors' brokerage accounts, which may have tax implications depending on individual circumstances.

5. Does the reverse split change BlackRock's Ethereum ETF strategy?

No. ETHA will continue tracking the price of Ethereum exactly as before. The reverse split is an administrative adjustment aimed at improving trading efficiency and does not alter the ETF's investment objective or portfolio composition.