Public companies now hold 7.77 million ETH — roughly 6.5% of circulating supply — up from negligible amounts eighteen months ago. The acceleration is led by Bitmine Immersion Technologies (NYSE: BMNR), which purchased another 27,562 ETH for $75.2 million in the week ending September 20, lifting i...
"We believe a crypto bull market is underway, having started in late June, driven by a multitude of factors including the rotation from AI back to crypto, strengthening crypto fundamentals centered around both tokenization and AI and lastly, the ending of the 4-year cycle." — Tom Lee, Chairman, Bitmine Immersion Technologies
Public companies now hold 7.77 million ETH — roughly 6.5% of circulating supply — up from negligible amounts eighteen months ago. The acceleration is led by Bitmine Immersion Technologies (NYSE: BMNR), which purchased another 27,562 ETH for $75.2 million in the week ending September 20, lifting its total to 5.98 million tokens worth approximately $17.1 billion. Bitmine alone controls 4.9% of Ethereum's 122.1 million circulating supply.
The structural consequence is measurable: ETH held on centralized exchanges has fallen to 14.88 million tokens, the lowest reading since 2016, according to CryptoQuant. That figure is down 38% from the May 2023 peak of 25.2 million ETH. Corporate treasuries, staking contracts, and spot ETFs are pulling tokens out of tradeable float faster than new supply enters.
Unlike the MicroStrategy-style Bitcoin treasury model that relies on price appreciation alone, ETH treasury firms generate protocol-level income through staking. Bitmine's proprietary validator network, MAVAN, stakes 5.07 million ETH — roughly 13% of all validating ETH — and projects $330 million in annualized staking revenue at a 2.61% yield. This income stream, absent in Bitcoin treasury strategies, creates a fundamentally different corporate finance equation.
Five publicly traded companies account for the majority of corporate ETH holdings. Their combined position as of mid-September 2026:
| Company | Ticker | ETH Holdings | % of Supply | Est. Value | |---------|--------|-------------|-------------|------------| | Bitmine Immersion Technologies | BMNR | 5,983,940 | 4.90% | $17.1B | | SharpLink Gaming | SBET | 868,699 | 0.72% | $2.3B | | Dynamix Corp (Ether Machine) | ETHM | 496,712 | 0.41% | $1.2B | | Coinbase Global | COIN | 150,193 | 0.12% | $410M | | Galaxy Digital | GLXY | 97,764 | 0.08% | $267M |
The aggregate 7.77 million ETH held by public companies represents a concentrated bet on Ethereum as an income-producing asset, not merely a store of value. That distinction is critical for understanding why this cohort has grown even as corporate Bitcoin treasury buying collapsed 94% in Q3 2026, according to webthreepedia's prior reporting.
SharpLink (SBET) and Dynamix (ETHM) followed Bitmine's model at smaller scale. SharpLink, originally a sports-betting technology firm listed on Nasdaq, pivoted to an Ethereum treasury strategy and now holds 868,699 ETH. Dynamix formed through a SPAC merger with The Ether Reserve and trades as ETHM.
Bitmine has purchased ETH every week since June 2025, when it pivoted from Bitcoin mining to an Ethereum treasury strategy. Its most recent 8-K filing, dated September 20, 2026, disclosed:
The company's revenue profile has shifted accordingly. In Q3 2026 (three months ended May 31), Bitmine generated $45.7 million in staking and validation income, representing 98.3% of its $46.5 million total revenue. That figure was up $44.5 million from Q3 2025, when staking income was negligible.
However, the growth has come at a cost. Bitmine's shares outstanding increased 451% over the past year, driven by at-the-market (ATM) equity offerings. The company expanded its ATM facility to $24.5 billion in aggregate capacity, providing a continuous funding mechanism for ETH purchases. Cantor Fitzgerald raised its price target to $63.60 from $30.60, reflecting the treasury's growth, but the dilution math remains a central tension in the story. The company also reported negative free cash flow of $295 million and a net loss of $84 million in Q3 2026.
MAVAN — Made in America Validator Network — launched March 25, 2026. Bitmine's 5.07 million staked ETH represents approximately 13% of the ~38.9 million ETH currently validating the Ethereum network. At a seven-day average yield of 2.61%, the company projects annualized staking revenue of $330 million. That projection has risen from an initial $300 million estimate at launch, driven by additional ETH migration into the validator set.
According to CryptoQuant data, ETH held on centralized exchanges has fallen to 14,882,227 tokens as of mid-September — the lowest level since the network launched in 2015. The decline trajectory:
That 10.3 million ETH net withdrawal from exchanges over 28 months corresponds to roughly $28.1 billion at current prices.
Three demand channels are driving the reduction:
The overlap between these channels is not zero — some corporate treasuries custody through exchanges, and ETF custodians hold ETH in cold storage rather than exchange wallets. Nonetheless, the direction is unambiguous: tradeable float is shrinking.
The economic engine underlying ETH treasury strategies is staking yield. At current participation levels, validators earn a base consensus yield near 2.7%, with MEV-Boost adding 0.5 to 1.0 percentage points for an all-in return of approximately 3.1–3.3% annualized.
That yield is compressing. As the share of staked ETH has risen from 29% to 34% of supply in 2026, the per-validator reward has declined. Ethereum Improvement Proposal EIP-8361, currently under discussion, models annual consensus yield falling from approximately 2.6% to 1.2% if staking participation continues to climb, with the reduction phased in over 18 months.
For corporate treasuries, yield compression has direct revenue implications. Bitmine's projected $330 million annualized staking income assumes a 2.61% yield. If base yields compress to 1.5–2.0% — a plausible scenario under EIP-8361 — that figure could fall to $190–250 million, all else equal.
Institutional staking's share of total staked ETH grew from 25.9% to 35.3% during the first half of 2026, according to Lido reporting. Total staked ETH on Lido's platform increased 19% during the same period, from 36.3 million to 43.1 million ETH. This institutional migration into staking is both the cause and the consequence of the treasury model: firms like Bitmine stake to earn yield, but their entry pushes yields lower for all participants.
The Bitmine model is frequently compared to Strategy Inc.'s (formerly MicroStrategy) Bitcoin treasury approach. The comparison is instructive but the economic structures are fundamentally different.
| Factor | Strategy (BTC) | Bitmine (ETH) | |--------|---------------|---------------| | Holdings | 845,050 BTC ($72.7B) | 5,983,940 ETH ($17.1B) | | % of supply | 4.03% | 4.90% | | Yield from asset | 0% (Bitcoin has no native yield) | 2.61% staking yield | | Projected annual income from holdings | $0 | $330M | | mNAV (premium to NAV) | 1.10× | ~1.0× (market cap ≈ holdings value) | | Primary funding | Convertible notes + preferred stock | ATM equity offerings | | Share dilution (past year) | Moderate | 451% |
Strategy's mNAV has compressed to 1.10× from peaks above 1.4× earlier in 2026. At points in August 2026, Strategy traded at a 0.68× basic mNAV — a 32% discount to its Bitcoin holdings. The accretion math that justifies premium valuations only works above 1.0×: selling equity above NAV to buy more Bitcoin increases Bitcoin-per-share. Below 1.0×, the same trade dilutes existing holders.
Bitmine's market cap of $16.8 billion sits near its $17.1 billion in total crypto and cash holdings, implying roughly 1.0× mNAV. The staking income provides a revenue stream that Bitcoin treasury firms cannot replicate, but the 451% share dilution in a single year raises the question of whether per-share value accretion is occurring or whether incoming capital is simply being recycled into ETH at the cost of existing shareholders.
U.S. spot Ethereum ETFs add a parallel institutional demand channel. Key metrics as of mid-September 2026:
In September 2026, ETH ETFs attracted roughly $445 million in net inflows, nearly matching Bitcoin ETFs' $467 million for the month. According to Bitfinex Alpha, institutional traders are using spot ETH ETF holdings as collateral for CME futures trades, constructing basis trades that generate yield on top of the underlying ETH exposure.
This ETF-as-collateral dynamic creates additional demand pressure: firms are not merely buying and holding ETH exposure — they are actively using it as margin, which increases the economic velocity of each locked token.
Dilution vs. accretion. Bitmine's 451% increase in shares outstanding over one year is the central risk. If ETH price appreciation and staking income do not exceed the dilution rate, per-share value declines even as total holdings grow. The $24.5 billion ATM facility provides capacity for further issuance.
Yield compression. EIP-8361 could reduce base staking yields to 1.2% over 18 months. Corporate treasury models built on 2.6%+ yields face revenue headwinds if the proposal advances.
Concentration risk. Bitmine's 5.07 million staked ETH represents 13% of all validating ETH. A single corporate entity controlling that share of validation raises questions about network decentralization, even if the ETH is distributed across thousands of validators.
Correlation risk. Corporate treasuries, ETFs, and staking contracts are all long ETH. In a downturn, forced selling from leveraged treasury positions or ETF redemptions could amplify price declines, potentially triggering margin calls or liquidity crises.
Regulatory exposure. The SEC's proposed Regulation Crypto Assets (Reg CA), currently in its 60-day comment period, could impose new requirements on public companies holding crypto assets as treasury reserves. The GENIUS Act's rulemaking timeline adds further uncertainty around staking income classification.
The ETH treasury model has created a measurable supply squeeze: 6.4 million ETH have left exchange wallets in 14 months, driven by corporate buying, staking lockups, and ETF accumulation. Bitmine's scale — 4.9% of circulating supply, 13% of validating ETH — gives a single public company significant influence over both Ethereum's tradeable float and its validator economics.
Whether the model generates per-share value depends on the balance between ETH price appreciation, staking income, and equity dilution. At current yields and a $17.1 billion treasury, Bitmine projects $330 million in annual staking revenue. That figure provides an income floor absent from Bitcoin treasury strategies. But the 451% dilution in twelve months means that floor must grow faster than the share count to deliver shareholder returns.
The supply data is unambiguous. The valuation math is not.