Thirty public companies now hold a combined 6.86 million ETH — 5.69% of total Ethereum supply — valued at approximately $16.1 billion, according to CoinGecko data as of May 2026. The figure was under 1 million ETH in mid-2025. The three largest holders — BitMine Immersion Technologies (5.21M ETH)...
"All these secured debt notes are going to destroy a lot of ETH treasury companies in a bear market. And that's going to be a real problem." — Sam Tabar, CEO, Bit Digital
Thirty public companies now hold a combined 6.86 million ETH — 5.69% of total Ethereum supply — valued at approximately $16.1 billion, according to CoinGecko data as of May 2026. The figure was under 1 million ETH in mid-2025. The three largest holders — BitMine Immersion Technologies (5.21M ETH), Sharplink (872,984 ETH), and The Ether Machine (496,712 ETH) — account for roughly 96% of the aggregate corporate stack.
The model borrows directly from Strategy's (formerly MicroStrategy) Bitcoin playbook: issue equity or convertible debt, buy the underlying asset, report holdings weekly, and let the stock trade as a leveraged proxy. The difference is yield. Ethereum's proof-of-stake consensus lets these firms stake their holdings and report annualized staking rewards — a feature Bitcoin treasuries cannot replicate. BitMine reports $352 million in projected annual staking revenue. Sharplink has earned 18,800 ETH in cumulative staking rewards since June 2025.
The strategy has attracted capital and attention. It has also produced a 95% stock collapse (ETHZilla), a $1.5 billion SPAC merger termination (The Ether Machine / Dynamix), and a full exit by Peter Thiel's Founders Fund. The data suggests an asset class forming around a single token, with structural leverage risks that remain largely unpriced by equity investors.
CoinGecko tracks 30 public companies and institutions holding ETH on their balance sheets. The top five by holdings as of May 2026:
| Company | Ticker | ETH Held | USD Value (approx.) | % of ETH Supply | |---|---|---|---|---| | BitMine Immersion Technologies | BMNR | 5,210,000 | $12.3B | 4.31% | | Sharplink | SBET | 872,984 | $2.0B | 0.72% | | The Ether Machine | ETHM | 496,712 | $1.2B | 0.41% | | Bit Digital | BTBT | 155,434 | $365M | 0.13% | | Coinbase | COIN | 137,300 | $323M | 0.11% |
BitMine alone holds 4.31% of Ethereum's 120.7 million total supply. The firm uplisted to the NYSE in April 2026, and its stock trades approximately $816 million per day on a five-day average. Its chairman, Tom Lee, stated in a May press release that the company's goal is to control 5% of Ethereum's total supply.
Sharplink's chairman is Joe Lubin, co-founder of Ethereum. The firm reported Q1 2026 revenue of $12.1 million and stated that ETH per share has more than doubled since its treasury strategy began in June 2025, rising from 2.0 to 4.02.
The playbook follows a consistent pattern, documented by Skadden in a February 2026 legal analysis. Companies use two primary financing mechanisms:
At-the-Market (ATM) equity offerings. Firms sell shares directly into the market at prevailing prices, then deploy proceeds into ETH purchases. This dilutes existing shareholders but avoids debt service obligations.
Convertible notes. ETHZilla issued $350 million in convertible debentures. Bit Digital upsized a convertible offering to $135 million at 4% annual interest, structured as unsecured debt. The distinction between secured and unsecured debt matters: secured notes give creditors direct claims on the ETH collateral, creating forced-sale risk in drawdowns.
According to Arkham Intelligence research, the cycle works as follows: the company issues convertible debt or additional equity, uses the proceeds to buy more digital assets, reports growing per-share crypto metrics, and hopes the stock price appreciation exceeds the dilution or interest cost.
The model depends on a rising or stable ETH price. When ETH declines, the reflexive loop reverses.
Unlike Bitcoin treasury companies, ETH holders can stake their assets and earn protocol-level rewards. This creates a reportable revenue line that Bitcoin treasury firms lack.
BitMine holds 4.71 million staked ETH, projecting $352 million in annualized staking revenue at full scale. Sharplink has generated 18,800 ETH in total staking rewards since inception, deploying both native staking and liquid staking (via LsETH and weETH). Bit Digital reported 155,434 ETH staked as of February 2026.
Sharplink reported Q1 2026 revenue of $12.1 million, describing its approach as pursuing "singles and doubles" — consistent 4-5% annualized returns through staking rather than high-risk DeFi strategies, according to a report by The Block.
The yield narrative distinguishes these firms from their Bitcoin counterparts. It also introduces counterparty risk. Liquid staking tokens (LsETH, weETH) carry smart contract risk and potential depegging in market stress. The firms are, in effect, layering protocol risk on top of asset price risk on top of corporate leverage risk.
Two cautionary cases demonstrate the model's fragility.
ETHZilla (ETHZ): The company, which pivoted from failed biotech firm 180 Life Sciences to an Ethereum accumulation vehicle, reached a share price of $107 in August 2025. By December 30, the stock had fallen to $4.99 — a 95% drawdown. The cause was structural: ETHZilla panic-sold $40 million of ETH in October and $74.5 million more in December to service convertible note obligations. The forced selling at depressed prices created a self-reinforcing downward spiral. Peter Thiel's Founders Fund, which had disclosed a 7.5% stake in August, filed an amended 13G in February 2026 showing zero shares and 0.0% beneficial ownership. As of late April 2026, ETHZilla traded at $3.53, with a market capitalization of $56 million. The stock's 52-week low is $0.70.
The Ether Machine (ETHM): A planned $1.6 billion SPAC merger between The Ether Machine and Dynamix Corporation collapsed in May 2026. Ethereum's price remained approximately 55% below its August 2025 all-time high, making the deal's original valuation untenable. The Ether Machine holds 496,712 ETH but now faces an uncertain listing path. Its stock traded at a reported 812% premium to fair value as recently as February 2026, suggesting significant disconnect between equity valuation and underlying asset value.
Research from Sentora (formerly IntoTheBlock) and Coin Metrics flagged ETH treasury companies as a systemic concentration risk for Ethereum itself. With 5.69% of total supply held by 30 entities — and 4.31% held by a single company — the network faces a scenario in which corporate treasury decisions directly impact on-chain liquidity and price discovery.
In a severe market downturn, forced selling by leveraged treasury companies could create cascading liquidation pressure. Sentora's analysis estimated that a severe unwind scenario could push ETH to the $2,500-$3,500 range or lower, depending on the speed and concentration of forced sales.
Bit Digital CEO Sam Tabar explicitly warned about this dynamic in an interview with The Block: "When the assets go down, which is Ethereum, the creditors are going to go after the company and the assets. Debt is amazing, but you've got to keep it unsecured." He urged all digital asset treasury (DAT) companies to use unsecured debt to avoid triggering forced liquidation cascades.
The ETHZilla episode provides a real-world example of this mechanism. Convertible note obligations forced $114.5 million in ETH sales at the worst possible time, accelerating both the stock decline and the underlying asset's price pressure.
On May 9, 2026, Sharplink entered a non-binding memorandum of understanding with Galaxy Digital to form the Galaxy Sharplink Onchain Yield Fund. The vehicle would deploy $125 million — $100 million from Sharplink's staked ETH treasury and $25 million from Galaxy — into DeFi liquidity protocols and other onchain yield strategies.
Galaxy's institutional research and risk management framework would govern protocol selection, exposure sizing, and monitoring. The fund represents the first instance of a public ETH treasury company systematically allocating capital into DeFi yield strategies through an institutional asset manager, according to the joint press release.
This marks a shift from the passive "buy and hold" treasury model toward active DeFi participation. It also introduces additional layers of risk: smart contract risk across multiple protocols, liquidity risk in DeFi pools, and governance risk in decentralized protocols. The fund structure maintains Sharplink's core ETH exposure while seeking incremental yield above base staking returns.
The strategy reflects the economic reality that Ethereum's base-layer staking yield has compressed to approximately 2.8%, pushing yield-seekers further along the risk curve into DeFi protocols and liquid staking derivatives.
Year-to-date performance through May 2026 reveals a consistent pattern: ETH treasury stocks amplify underlying asset movements in both directions.
The divergence between SBET's growing ETH-per-share metric and its declining stock price suggests that equity markets are repricing the leverage and dilution risk embedded in the treasury model, even as the underlying ETH accumulation accelerates.
Ethereum itself trades at $2,311 as of May 12, 2026, with a market capitalization of $278.9 billion. ETH remains approximately 55% below its August 2025 all-time high.
The ETH treasury company model is nine months old and already bifurcating. On one side: BitMine, Sharplink, and Bit Digital, with NYSE listings, institutional partnerships, and structured staking operations generating hundreds of millions in projected annual revenue. On the other: ETHZilla's 95% stock collapse, The Ether Machine's failed SPAC merger, and Peter Thiel's exit.
The fundamental question is whether these companies create economic value or simply repackage leveraged ETH exposure in an equity wrapper. The staking yield component — absent in Bitcoin treasury strategies — offers a genuine revenue line. But when a single company holds 4.31% of a network's supply and finances that position with convertible debt, the company's solvency and the network's price stability become correlated risks.
The data from ETHZilla's forced liquidation demonstrates the mechanism clearly: convertible note obligations triggered $114.5 million in ETH sales, depressing both the stock and the underlying asset. The same dynamic at BitMine's scale — 5.21 million ETH — would constitute a systemic event for Ethereum.
As Sam Tabar summarized: "Debt is amazing, but you've got to keep it unsecured." Whether the sector heeds that warning before the next drawdown will determine whether ETH treasury companies become a permanent feature of crypto capital markets or a leveraged bet that ends in coordinated unwind.