Bitmine Immersion Technologies (BMNR), holding 4.11 million ETH ($12.1B), deposited 82,560 ETH ($259M) into Ethereum’s Proof of Stake contract today. Since starting staking on December 27, 2025, it has committed 544,064 ETH ($1.7B), about 13.2% of its holdings, ahead of its MAVAN validator launch in Q1 2026. This aggressive move, led by Chairman Tom Lee, boosts yields at 3% APR ($374M/year fully staked) and drove BMNR stock up 14%. With ETH at $3,140, staking locks supply amid ETF flows.