Bitmine Starts ETH Staking With $219M Deposit Into PoS

Bitmine has begun staking Ethereum for the first time. This marks a shift in how the firm manages its large crypto treasury. On December 27, on-chain data showed that Bitmine deposited 74,880 ETH. It is worth about $219 million in Ethereum’s proof-of-stake system. The move signals a transition from passive holding to yield generation. Until now, Bitmine had not used staking despite being the largest known Ethereum treasury holder.

First Staking Move Marks Strategic Shift

According to on-chain monitoring shared by EmberCN, the deposit represents Bitmine’s first direct interaction with Ethereum staking. The ETH was sent to validator deposit contracts linked to the Ethereum PoS network. 

According to EmberCN, Bitmine—the largest Ethereum treasury company—has begun staking ETH for yield. This morning, it deposited 74,880 ETH (~$219M) into Ethereum PoS, marking its first staking move. Bitmine currently holds 4.066M ETH; at an estimated ~3.12% APY, fully staking…

— Wu Blockchain (@WuBlockchain) December 27, 2025

At current estimates, Ethereum staking offers an annual yield of roughly 3.1%. While rates fluctuate with network conditions. This staking provides a relatively stable return compared to trading or lending strategies. This initial deposit covers only a small portion of Bitmine’s total holdings. However, it establishes the operational groundwork for a broader staking strategy.

Treasury Holds Over 4 Million ETH

Bitmine currently controls about 4.066 million ETH. It is valued at $12.4 billion at recent market prices. The firm added nearly 99,000 ETH last week alone, according to Arkham and EmberCN data. This increases its exposure even as ETH prices remained below prior highs. If Bitmine were to stake its entire ETH balance at the current estimated yield, it could earn roughly 126,800 ETH per year. At today’s price of around $2,927 per ETH, that would translate to approximately $371 million in annual staking rewards. However, full staking is not guaranteed. Large holders often stagger deposits to manage liquidity, validator risk, and operational constraints.

On-Chain Transfers Show Active Positioning

Blockchain data shows that the staking deposit followed a series of large ETH transfers from exchanges and custodians. Over the past week, Bitmine received ETH from platforms such as Kraken, FalconX and BitGo, suggesting ongoing treasury consolidation. Several batch deposits into the Ethereum validator contract occurred within a short time window. This pattern indicates a coordinated staking operation rather than a single manual transaction. Despite the size of the holdings, Bitmine currently sits on unrealized losses. Data indicates the firm’s average acquisition price is near $3,884 per ETH, above current market levels.

Broader Trend Among Crypto Treasury Firms

Bitmine’s move comes as large crypto treasury companies explore ways to improve capital efficiency. While Bitcoin-focused firms often rely on price appreciation alone. Ethereum holders can earn yield directly through staking. This difference makes ETH treasuries structurally distinct. Staking can offset price volatility and generate income during flat or declining markets.

Still, staking at scale carries risks. These include validator downtime, slashing penalties, and changes in protocol economics. For this reason, many institutions adopt a gradual approach. Bitmine has not yet disclosed whether it plans to stake more ETH in the near term. However, the first $219 million deposit suggests that yield generation is now part of its long-term treasury strategy. As Ethereum’s PoS ecosystem matures, moves like this may become standard for large