BitMine Immersion Technologies (NYSE: BMNR), the Ethereum treasury company chaired by Tom Lee, disclosed Monday that it acquired 27,562 ETH during the prior week, according to Blockchain Reporter’s coverage of the company release. The purchase lifts BitMine’s total ether holdings to 5,983,940 ETH, about 4.9% of the circulating supply, and pushes the company’s combined crypto and cash reserves past $17 billion. The disclosure reinforces BitMine’s standing as the largest public holder of ether.
As of September 20, BitMine held 5,983,940 ETH priced at $2,688 per token, alongside 212 Bitcoin, $714 million in cash and marketable securities, a $180 million stake in Beast Industries, and other positions. The treasury’s ether stack now sits near the 5% supply threshold, a level that gives the firm a prominent role in Ethereum supply discussions. The purchase also fits a broader trend of Ethereum-focused accumulation; network activity such as Neo X Adds USDC.e and WETH Bridging From Ethereum via Chainlink CCIP shows continued infrastructure expansion across the ecosystem.
Treasury Nears the 5% Supply Milestone
At 4.9% of total supply, BitMine is approaching a threshold that could intensify public attention on concentrated ETH ownership. The company has not framed the purchase as a short-term price call, but the treasury model itself is a distinct signal: a public company accumulating ether as a reserve asset while also holding fiat, Bitcoin, and equity stakes. For Ethereum, the concentration debate matters because large holders can influence staking dynamics, governance conversations, and market perception.
The latest move follows earlier reported activity. In a prior disclosure, BitMine Buys 27,180 ETH, Bringing Holdings to 5.96M ETH showed the company adding to its position at a similar scale. The pattern of weekly purchases suggests a consistent dollar-cost-style accumulation rather than one-off positioning, although the company has not published a fixed mandate for future buys.
Staking Turns the Treasury Into Income
One factor that distinguishes BitMine’s ETH holdings from a passive reserve is staking income. The company has previously indicated that its ether can generate yield through staking, turning the treasury into an operational asset. That income angle helps frame the treasury as more than a price exposure: it is also a yield-generating balance sheet line. If network staking economics shift because of lower fees or changing issuance, the calculus around treasury accumulation may change as well.
Earlier coverage noted that BitMine ETH Holdings Reach 5.93M, Representing 4.9% of Total Supply, and the new total extends that accumulation. With the company now above $17 billion in crypto and cash reserves, the next watchpoint is whether it crosses the 5% supply milestone and how it reports any additional treasury purchases or staking yield in future disclosures.
Market observers will also be watching whether other public companies follow the ETH treasury playbook, especially as Ethereum remains a dominant smart contract platform. The BitMine disclosure does not constitute a price forecast, but it does add another institutional-scale signal to the Ethereum accumulation story. The key data points in the coming quarters will be the pace of weekly purchases, the company’s cash-to-crypto mix, and any commentary on staking returns or regulatory treatment of enterprise ETH holdings.
