BitMine (BMNR) has increased its Ethereum (ETH) holdings to 2.65M ETH, up from 2.4M last week, signaling strong conviction in ETH as a primary treasury asset. Tom Lee highlights ETH's role in the long-term AI and crypto supercycles due to its reliability and 100% uptime, suggesting ETH is currently undervalued. Investors might consider BMNR as a proxy for ETH exposure or directly invest in ETH for long-term growth.