Thirty-four public companies now hold a combined 7,915,367 ETH worth approximately $18.9 billion, representing 6.49% of Ethereum's total circulating supply, according to CoinGecko treasury data as of October 2026. The figure marks the maturation of a corporate treasury model first pioneered by Mi...
"We will be done stacking once we own 5% of ETH." — Tom Lee, Chairman, Bitmine Immersion Technologies
Thirty-four public companies now hold a combined 7,915,367 ETH worth approximately $18.9 billion, representing 6.49% of Ethereum's total circulating supply, according to CoinGecko treasury data as of October 2026. The figure marks the maturation of a corporate treasury model first pioneered by MicroStrategy (now Strategy Inc.) for Bitcoin, now replicated across Ethereum with one critical difference: staking yield.
Bitmine Immersion Technologies (NYSE: BMNR), chaired by Fundstrat co-founder Tom Lee, dominates the category with 6,041,481 ETH — roughly 4.9% of total supply — valued at $15.1 billion including cash and marketable securities. The company's 65-week acquisition streak has made it the largest single-entity Ethereum holder outside the Ethereum Foundation. Sharplink Inc. (SBET), the second-largest holder at 888,938 ETH, brings total concentration to over 65.9% of all publicly disclosed corporate ETH sitting with just two firms.
The economic proposition differs from Bitcoin treasury strategies in a fundamental way. Unlike Bitcoin, which generates no native yield, staked ETH produces protocol-level rewards currently running at 2.63% annualized gross yield. This creates a recurring revenue line that Bitcoin treasury firms cannot replicate. Whether the premium equity investors assign to these vehicles is justified by the underlying economics remains the central question.
As of October 2026, CoinGecko tracks 34 public companies holding ETH on their balance sheets, with total holdings of 7.9 million tokens. This is a structural shift from even 18 months ago, when corporate Ethereum positions were negligible outside of crypto-native firms.
The growth trajectory accelerated in mid-2025 when Bitmine pivoted from Bitcoin mining to an Ethereum-first treasury model, triggering a wave of imitators. At the time, fewer than 10 public companies held material ETH positions. The number has since more than tripled.
Concentration is extreme. Bitmine and Sharplink together control approximately 6.93 million ETH — 87.5% of all publicly tracked corporate holdings. The remaining 32 companies hold roughly 985,000 ETH combined, averaging approximately 30,800 ETH each.
For context, the Ethereum network has approximately 122.1 million ETH in circulation. Corporate treasuries now control a supply share comparable to the 43.8 million ETH locked in staking (35.9% of supply), though with significant overlap: a large portion of corporate-held ETH is itself staked.
Bitmine's accumulation has been methodical. The company has purchased ETH in each of the past 65 consecutive weeks, building from its initial position to 6,041,481 ETH as disclosed in its October 19, 2026 8-K filing with the SEC. Key metrics from that filing:
The company's stated objective is the "Alchemy of 5%" — acquiring 5% of total ETH supply. At 4.9%, it is approximately 99% of the way to that target.
Bitmine's staking operations run through MAVAN (Made in America VAlidator Network), described by the company as an institutional-grade staking platform. MAVAN now manages over $14 billion in staked assets, including roughly $2 billion in third-party client assets. The platform's projected annualized staking revenue ranges from $358 million to $424 million, depending on participation rates and network yields.
Chairman Tom Lee told media in October 2026 that Bitmine would be "done stacking" once it crosses the 5% threshold, setting an end date to the accumulation streak. He has separately suggested Ethereum could reach $62,000, though the basis for that projection was not detailed in public filings.
Stock performance: BMNR opened at $21.60 on October 20, 2026, down from $26.79 on October 5. B. Riley lifted its price target to $34 with a Buy rating. The consensus analyst target is $48.80. The stock trades on the NYSE.
The company's preferred stock offering (NYSE: BMNP) pays a 9.50% annualized dividend on Series A Perpetual Preferred Stock, with weekly cash distributions.
Sharplink Inc. (SBET), backed by Ethereum co-founder Joe Lubin, holds 888,938 ETH as of August 3, 2026 — the second-largest corporate position. The company's holdings break down as:
Sharplink's treasury strategy launched June 2, 2025. Since then, the company has generated 18,800 ETH in cumulative staking rewards. Quarterly revenue reached $12.1 million in early 2026, up from under $1 million a year earlier, driven almost entirely by staking income.
The company raised approximately $3.2 billion in capital since adopting its ETH-first strategy and was added to the Russell 2000 and Russell 3000 indexes in May 2026, a milestone that triggered index-fund buying.
Beyond Bitmine and Sharplink, the remaining 32 corporate holders are significantly smaller. Detailed breakdowns of individual positions below the top two are less consistently disclosed, but the aggregate of approximately 985,000 ETH suggests most hold positions in the tens of thousands of tokens.
The yield argument is central to the corporate ETH treasury thesis, and the numbers require scrutiny.
Ethereum staking hit a record 43.8 million ETH in Q3 2026 — 35.9% of total supply — with roughly 871,300 active validators. But the consequence of rising participation is falling yields: annualized staking returns dropped to 2.63% gross from 2.81% in the prior quarter.
Net yields vary by method:
| Staking Method | Gross Yield | Net Yield (approx.) | |---|---|---| | Solo validator | 2.63% | 2.63% | | Liquid staking (10% fee) | 2.63% | ~2.37% | | Staking ETF (mgmt fee) | 2.63% | ~1.9% |
For Bitmine, with 5.07 million ETH staked, a 2.63% gross yield implies approximately $317 million in annualized staking rewards at current ETH prices (~$2,500). The company's own projections of $358M–$424M suggest either higher assumed ETH prices or additional revenue from MAVAN client operations.
The critical comparison is to the company's cost of capital. Bitmine's 9.50% preferred dividend on its Series A offering sets a high bar. If the preferred stock raise was $274 million, the annual dividend obligation is approximately $26 million — a fraction of projected staking income. But the preferred stock is only one layer of the capital stack. Total dilution from equity offerings, which fund the bulk of ETH purchases, is harder to quantify from public disclosures alone.
Staking yields are also compressing. The post-Pectra upgrade environment has attracted more validators, and mathematical certainty dictates that yields will continue falling as more ETH is staked. At 40% supply staked, gross yields would approach 2.4%. At 50%, closer to 2.1%.
Bitmine funds ETH purchases primarily through equity raises, not operating cash flow — a direct parallel to Strategy Inc.'s Bitcoin playbook. The company filed multiple S-3 shelf registrations with the SEC in 2026, enabling at-the-market (ATM) offerings.
In one documented instance, Bitmine closed a $274 million preferred stock offering and used proceeds to purchase 76,881 ETH (approximately $136 million at prevailing prices) in a single week, lifting its treasury to 5.62 million tokens at that time.
The model works when the company's equity market capitalization exceeds the net asset value (NAV) of its ETH holdings — the so-called NAV premium. This premium allows the company to issue shares "above NAV," purchase ETH, and increase per-share ETH exposure. When the premium compresses or inverts, the flywheel stalls.
This is not a theoretical risk. Strategy Inc. (formerly MicroStrategy) has experienced periods where its stock traded at or below Bitcoin NAV, freezing its ability to accrete value through new share issuance. Bitmine faces the same dynamic, compounded by ETH's higher historical volatility relative to BTC.
Institutional backers listed in Bitmine filings include ARK Invest (Cathie Wood), Founders Fund, Pantera Capital, Kraken, Digital Currency Group, Galaxy Digital, and Bill Miller III.
Concentration risk. Two firms control 87.5% of publicly tracked corporate ETH. A forced liquidation by either — whether due to margin calls, regulatory action, or corporate distress — would constitute a supply shock. Bitmine's 6.04 million ETH is roughly 14% of total staked ETH. Unstaking that position would take weeks due to Ethereum's exit queue, but the market impact of announced intent could be immediate.
Yield compression. Staking yields have fallen from above 4% in early 2025 to 2.63% in Q3 2026. The trend is structural: more ETH staked means lower per-token rewards. Corporate treasury strategies premised on yield must account for continued compression.
ETH price exposure. At $2,500 per ETH, Bitmine's position is worth approximately $15 billion. At $1,500 — ETH's level in mid-2023 — the same position would be worth $9 billion. The company's capital structure, including preferred stock dividends and equity dilution, is designed for a rising or stable ETH price. A sustained decline creates covenant and liquidity pressure.
Regulatory uncertainty. The SEC's 760-page custody framework (published October 2026) and evolving staking regulations create compliance overhead. Whether staked ETH qualifies as a security under evolving interpretations remains unresolved.
NAV premium dependency. The equity-funded accumulation model requires a persistent NAV premium. If BMNR shares trade below ETH NAV, new issuances are dilutive rather than accretive. The stock's decline from $26.79 to $21.60 in October suggests market skepticism about the premium's durability.
The corporate Ethereum treasury phenomenon has moved from concept to measurable market structure in under 18 months. At 7.9 million ETH across 34 firms, the category is no longer experimental. It represents a permanent source of demand — and a permanent source of concentrated risk.
The staking yield differential is real but narrowing. At 2.63% and falling, the gap between gross staking returns and corporate cost of capital will continue to tighten. The firms that survive will be those whose equity markets assign a persistent premium to professionally managed, yield-bearing ETH exposure. Those that do not maintain that premium will find the model's mechanics working in reverse.
Bitmine's approach to the 5% supply threshold marks an inflection point. Whether it signals the maturation of a new corporate asset class or the peak of a capital-markets arbitrage depends on variables — ETH price, staking yields, regulatory clarity — that remain outside any single firm's control.