BlackRock Boosts Bitmine Stake to 9M Shares Worth $246M

BlackRock has sharply increased its stake in Bitmine Immersion Technologies. The asset manager now holds about 9.05 million BMNR shares. The position is worth roughly $246 million, based on its latest 13F filing.

The move represents a 165.6% jump from the previous quarter. It shows a stronger institutional interest in crypto infrastructure firms. Bitmine is not a typical mining company anymore. Instead, it focuses heavily on building a large Ethereum treasury. The filing reflects positions as of the end of December 2025. It gives a snapshot of how big asset managers are adjusting their crypto exposure.

BlackRock’s Larger Bet on Bitmine

The new filing shows a major increase in BlackRock’s BMNR holdings. The asset manager boosted its position by more than 160% quarter over quarter. That makes it one of the larger institutional investors in the stock. 13F filings usually represent client and fund positions, not direct corporate bets. Still, markets often see these moves as signals of institutional confidence.

BlackRock manages around $14 trillion in assets. So even small percentage shifts can carry weight. The increase suggests growing interest in companies tied to crypto infrastructure. Meanwhile, more institutions have started adding crypto related equities. Some prefer these stocks over direct token exposure.

Bitmine’s Ethereum Treasury Strategy

Bitmine has built a massive Ethereum treasury. The company now holds over 4.3 million ETH. That equals roughly 3.5% of the total supply. Along with its crypto holdings, Bitmine also keeps large cash reserves. Combined assets reportedly reach close to $10 billion.

A large portion of its ETH is already staked. That staking generates steady rewards for the company. Management plans to expand the staking operation further in 2026. The company’s long term goal is to control about 5% of the total ETH supply. This strategy mirrors Bitcoin treasury models but uses staking for extra yield.

Market Pressure and Volatility

Despite the large treasury, Bitmine has faced strong market pressure. Ethereum prices dropped sharply from earlier highs. That decline created large paper losses for companies holding big ETH positions. BMNR stock also saw heavy selling during these periods. Investors reacted to the falling crypto prices and tighter margins. Still, the company continued adding to its holdings. That move signals long term confidence from its leadership. They appear focused on future growth rather than short term price swings.

What It Means for Institutions

BlackRock’s increased stake sends a clear signal. Large institutions are still exploring crypto linked strategies. Some now view treasury style companies as long term bets. Bitmine’s model blends staking income with asset exposure. That structure may attract investors looking for yield along with price upside.

However, risks remain tied to crypto prices and execution. If markets stay volatile, these strategies will face pressure. For now, the filing shows one clear trend. Even after market swings, institutional money is still moving deeper into crypto infrastructure.

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