Bitmine Nears 5% of ETH Supply as 4.5M BMNR Buybacks Tighten the Share Count

Bitmine now holds a visible slice of the ETH supply

Bitmine now owns 4.8% of the total ETH supply across 120.7 million ETH. That makes the treasury a large, publicly visible concentration of a major asset inside a traded equity, not just a side position.

The recent change is the combination of moves. Bitmine added 10,399 ETH while also repurchasing 4.5 million of its own common shares. The ETH pool is still growing while the number of shares outstanding is shrinking, which is the basic setup for a stock to move faster than the underlying asset.

Why the setup matters now

In July, ETH outperformed the Nasdaq 100 by 2,500bp, according to Bitmine's announcement. When ETH regains leadership, investors often look for the most direct public way to express that view. Bitmine's appeal is that investors are not just looking at ETH exposure alone; they are also looking at how much of the supply the company has already accumulated.

Bulls see a company that is close to its stated 5% target. Bears will argue the shares may already reflect much of that path. The key debate, then, is whether BMNR gets rerated on top of ETH's move as it nears 5%, or merely tracks ETH without another multiple expansion leg.

BMNR's leverage comes from buybacks and staking

How the share-count mechanism works

Last week Bitmine bought back 4.5 million common stock shares under its $4 billion repurchase program. Since July 1, that total has reached 16.1 million common shares. At the same time, Bitmine acquired 10,399 ETH and says it has bought ETH every week since launching its treasury strategy. More assets with fewer shares is the core mechanism behind the higher-leverage setup.

Management also highlighted yield generation. Bitmine said it has 4,917,189 staked ETH, equal to about $9.2 billion at $1,880 per ETH, with a 2.67% 7-day annualized yield. The company projects annualized staking revenue of about $247 million. If those rewards remain on the balance sheet, they increase the amount of ETH backing each remaining share over time.

Why investors are focused on the balance sheet

Bitmine says its crypto, cash, and related holdings total $11.3 billion, including 5,797,813 ETH and $173 million in cash and marketable securities, plus other positions. The bull case is straightforward: buybacks reduce the denominator, staking can add native yield, and ETH exposure remains the central asset.

The main skeptic's case is also simple. The setup works only if management keeps repurchasing shares and the staking program keeps earning. If either weakens, the leverage wrapper becomes less effective.

What to watch as Bitmine approaches the 5% mark

The latest numbers

The next disclosure could change how investors size the setup. On July 19, Bitmine had disclosed 5.78 million ETH and $11.5 billion in total holdings. By early August, it reported 5,797,813 ETH and $11.3 billion in crypto, cash, and related holdings. With Bitmine already controlling 4.8% of the ETH supply, the remaining move to 5% is measured in a few hundred thousand ETH, not a very large multiple of its recent weekly purchases.

Three signals to monitor

• Purchase pace: Does Bitmine keep its weekly ETH acquisitions going, or do buybacks begin to crowd out new coin purchases?
• ETH leadership: Does ETH continue to show the kind of relative strength Bitmine highlighted, with July ETH outperformed the Nasdaq 100 by 2,500bp?
• Float compression: Does management keep using its $4 billion repurchase authorization to reduce the share count around the treasury?

What could weaken the thesis

The clearest risk is not a routine drop in ETH. It is a slower balance sheet. Bitmine's July 19 update said it bought 7,430 ETH in one week, and management tied the slower purchase pace to a heavier 5.5 million-share buyback. That approach can work, but only if the tighter share count continues to amplify the asset base. If new ETH purchases slow again while the stock remains richly priced, investors may focus more on execution risk than on future concentration.