BitMine Immersion Technologies (NYSE: BMNR) purchased 28,086 ETH last week for approximately $70 million, lifting its aggregate position to 5.93 million ETH — roughly 4.9% of Ethereum's 120.7 million token supply. The company, chaired by Fundstrat co-founder Tom Lee, has bought Ethereum every wee...
"Ethereum is vastly, vastly undervalued. If the CLARITY Act passes, you're really going to supercharge the movement... but Ethereum is going to do fine either way." — Tom Lee, Chairman, BitMine Immersion Technologies / Co-Founder, Fundstrat
BitMine Immersion Technologies (NYSE: BMNR) purchased 28,086 ETH last week for approximately $70 million, lifting its aggregate position to 5.93 million ETH — roughly 4.9% of Ethereum's 120.7 million token supply. The company, chaired by Fundstrat co-founder Tom Lee, has bought Ethereum every week since June 30, 2025, a streak now spanning more than 60 consecutive weeks. Its publicly stated target is 5% of total supply, a threshold it expects to cross within weeks.
The accumulation is reshaping Ethereum's supply dynamics. Exchange reserves have contracted to 14.88 million ETH, the lowest level since 2016, down from 21.3 million ETH in July 2025 — a drawdown of approximately 6.4 million ETH in 14 months. BitMine alone accounts for a meaningful share of that withdrawal. With 85% of its holdings staked through its proprietary MAVAN validator network, the company projects $330 million in annualized staking revenue at a 2.61% seven-day yield.
BitMine is the largest but not the only corporate buyer. Approximately 19 publicly traded companies now hold ETH as a treasury reserve asset, collectively controlling nearly 3 million ETH beyond BitMine's position. The phenomenon is compressing available float at a time when Ethereum spot ETFs are recording sustained inflows — $218 million in the week ending September 4, marking three consecutive positive weeks.
BitMine's Ethereum treasury strategy began on June 30, 2025. The company has not missed a single weekly purchase since.
| Metric | Value | |---|---| | Total ETH held | 5,929,198 | | % of total ETH supply | ~4.9% | | Target | 5.0% (approx. 6.04M ETH) | | Remaining to target | ~171,000 ETH | | Latest weekly purchase | 28,086 ETH (~$70M) | | Largest single-week purchase (2026) | 71,672 ETH (March 2026) | | Consecutive weeks of purchases | 60+ | | Holdings value (Sept. 8) | ~$14.66 billion |
BMNR stock traded at $24.59 on September 9, giving the company a market capitalization of approximately $14.97 billion. The stock has declined 10% over the past week and sits well below its 52-week high of $65.60, reflecting broader crypto-equity weakness rather than any change in the company's accumulation cadence.
BitMine originally operated as a Bitcoin mining infrastructure company. The pivot to an Ethereum-first treasury model marks one of the most concentrated corporate bets on a single layer-1 asset outside of MicroStrategy's Bitcoin position.
On March 25, 2026, BitMine launched MAVAN — the Made in America Validator Network — its proprietary institutional-grade Ethereum staking platform. The platform was initially built to service BitMine's own treasury operations.
As of September 7, 2026, BitMine had staked 5,067,309 ETH through MAVAN, representing approximately 85% of its total holdings. At a 2.61% seven-day yield, this generates projected annualized staking revenues of $330 million.
According to TechTimes, BitMine's staked ETH represents roughly 13% of all staked Ethereum — a concentration level that positions MAVAN as the single largest Ethereum staking entity by volume. Lido holds approximately 23% share by protocol, but that stake is distributed across thousands of independent node operators. MAVAN operates as a single centralized staking entity.
BitMine has stated plans to open MAVAN to external institutional investors, custodians, and ecosystem partners. The company also intends to expand staking services to additional proof-of-stake networks beyond Ethereum through the remainder of 2026.
The business model mirrors what MicroStrategy did for Bitcoin treasury operations but adds a yield component: rather than simply holding, BitMine earns protocol-level revenue by validating transactions.
The combined effect of corporate accumulation, staking lockups, and ETF custody is producing a measurable contraction in Ethereum's tradeable supply.
Exchange reserves: 14,882,226 ETH as of September 8, 2026, according to on-chain data cited by Parameter.io. This is the lowest reading since tracking began and represents a decline from 21,301,177 ETH on July 1, 2025 — a withdrawal of approximately 6.42 million ETH in 14 months.
Recent outflows: Over 116,000 ETH (approximately $300 million) left centralized exchanges in a 48-hour window in early September, according to CoinGape.
Staked supply: Approximately 42.99 million ETH is locked in staking contracts across 909,771 active validators, representing 34% of total supply, according to Beaconcha.in data.
Net liquid supply calculation: Of Ethereum's 122.02 million total supply, roughly 42.99 million is staked and 14.88 million sits on exchanges. The remainder — approximately 64 million ETH — is held in wallets, DeFi protocols, bridges, and other non-exchange, non-staking destinations. The portion actively available for spot trading on centralized venues is now just 12.2% of total supply.
BitMine is the most visible participant, but the corporate ETH treasury phenomenon extends further. According to CoinGecko, approximately 19 publicly traded companies now hold ETH as a strategic treasury asset, with collective holdings (including BitMine) exceeding 8.9 million ETH worth over $22 billion at current prices.
Notable participants include:
The key differentiator from Bitcoin treasury strategies: ETH can be staked. According to CoinLaw, institutional staking's share of total staked ETH grew from 25.9% to 35.3% in the first half of 2026, while total staked ETH increased 19% from 36.3 million to 43.1 million ETH. Corporate treasuries are not just holding ETH — they are earning yield on it, creating a recurring revenue line that Bitcoin treasury strategies cannot replicate.
Ethereum spot ETFs recorded $218 million in net inflows for the week ending September 4, 2026, according to KuCoin data. This marked the third consecutive week of positive flows.
| Week | Net Inflow | |---|---| | Aug 18-22 | Data not available | | Aug 25-29 | $1.08 billion | | Sept 1-4 | $218 million (3 trading days due to holiday) |
BlackRock's ETHA led with $136 million in inflows during the most recent week. Grayscale's ETHE continued to see outflows, recording $36.97 million in redemptions.
Total net assets in Ethereum ETFs reached $15.57 billion, representing a 5.20% net asset ratio relative to Ethereum's total market capitalization, according to KuCoin data.
ETF custody creates a distinct form of supply removal. Unlike staked ETH, which can be withdrawn (subject to queue delays), ETF-held ETH is custodied by regulated entities and not available for on-chain transactions or DeFi participation. It is effectively removed from the Ethereum economy entirely while remaining a claim on the underlying asset.
The economics of Ethereum staking have shifted as participation rates climb. More staked ETH means lower per-validator rewards, a dynamic built into Ethereum's protocol design.
Key staking metrics as of September 2026:
According to KuCoin, the staking yield compression has not deterred institutional participation. The queue to activate new validators has grown as institutional capital — seeking yield-bearing exposure to ETH rather than passive holding — continues to enter.
Liquid staking has also expanded. SparkFinance reported over 1 million wstETH supplied on its platform, doubling from approximately 500,000 at the start of 2026. Lido maintains roughly 23% of all staked ETH, followed by Binance at approximately 3.7 million ETH and Coinbase at 2.9 million ETH.
Concentration risk: A single entity approaching 5% of a layer-1 asset's supply raises governance and systemic risk questions. BitMine's staked position through MAVAN gives it significant influence over Ethereum's validator set. If BitMine were forced to liquidate under financial stress, the market impact on ETH price could be severe.
Yield sustainability: At 2.61%, staking yields are historically compressed. If the staking rate continues climbing above 34%, yields will fall further. BitMine's $330 million projected revenue depends on current yield levels persisting.
Regulatory uncertainty: The SEC has not provided definitive guidance on whether staked ETH constitutes a security. BitMine's MAVAN platform, which plans to onboard external institutional clients, operates in a regulatory gray zone.
Stock-to-NAV discount: BMNR's $14.97 billion market cap against $14.66 billion in ETH holdings suggests the market assigns minimal premium to the MAVAN business and staking revenue. The stock's 62% decline from its 52-week high of $65.60 indicates investor skepticism about the sustainability of the strategy.
What happens at 5%: BitMine has not disclosed whether purchases will continue, slow, or stop once the 5% target is reached. The approximately 171,000 ETH gap to target could be closed in two to three weeks at current purchase rates.
Ethereum's supply structure is undergoing a structural shift. The combination of BitMine's relentless weekly accumulation, expanding institutional staking participation, and steady ETF inflows is removing ETH from active circulation at a rate that exceeds new issuance. Exchange reserves at multi-year lows and a staking participation rate of 34% mean that the freely tradeable float — the ETH actually available for spot transactions on centralized venues — has contracted to roughly 12% of total supply.
Whether this supply compression translates to sustained price appreciation depends on demand dynamics that remain uncertain. But the mechanical reality is clear: the amount of ETH available to sell on exchanges is shrinking, and the entities absorbing it — corporate treasuries, staking protocols, and regulated ETFs — operate on longer time horizons than typical retail traders. The question is no longer whether institutional capital is entering Ethereum. It is whether Ethereum's protocol economics can sustain the yields that attract it.