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BlackRock’s Bitcoin Stash Hits 3.7% of Total Supply: Continues Adding Ethereum

Adam Forsyth
August 20, 2025
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BlackRock’s iShares Bitcoin Trust (IBIT) quietly amassed more than 3% of all Bitcoin in existence. If this isn’t enough proof of the increase in institutional demand for BTC, corporate heavyweights Strategy and Metaplanet added more btc logoBTC ▼-2.64% to their treasuries amid sharp price swings. 

As of 15 August 2025, BlackRock holds over 740,000 BTC through IBIT – 3.72% of Bitcoin’s total supply. This makes BlackRock one of the largest single pools of Bitcoin exposure globally, second only to Satoshi Nakamoto’s estimated 1:1 million BTC.

Let’s talk about competitors. Fidelity’s FBTC and Grayscale’s GBTC are at $24.7 billion and $22.18 billion respectively. Meanwhile, BlackRock’s IBIT stands steady at $80 billion. 

Strategy, formerly known as MicroStrategy, announced earlier this week that it bought an additional 430 BTC for about $51.4 million. That works out to roughly $119,666 per coin. This purchase brings its total holdings to a staggering 629,376 BTC, nearly 3% of all Bitcoin in circulation.

Metaplanet, the Japanese firm quickly becoming Asia’s most visible Bitcoin-heavy public company, isn’t slowing down either. The company just acquired 775 BTC at an average price of about $119,853 each. That’s a bold move, especially considering the average cost basis across all holdings now sits at roughly $101,726 per coin.

EXPLORE: Strategy and Metaplanet Now Control 3.1% of All Bitcoin

BlackRock IBIT’s Historic Growth

IBIT reached $70 billion in assets under management (AUM) in just 341 trading days – the fastest in ETF history! It outpaced even SPDR Gold Shares’ long-standing record.

It is safe to say that IBIT has normalized Bitcoin exposure for large pools of capital by offering a familiar wrapper, custody and regulatory oversight. Furthermore, the company has recorded sustainable inflows even during price declines.

Bitcoin is seeing accelerated accumulation. But if this trend persists, the interplay of constrained supply and recurring institutional inflows could define BTC’s next phase?

DISCOVER: Next 1000X Crypto: 10+ Crypto Tokens That Can Hit 1000x in 2025

BlackRock Strategy Shift: Sells Bitcoin, Buys Ethereum

Meanwhile, BlackRock’s iShares Ethereum Trust (ETHA) is in focus. The ETF which launched in July 2024 has already surpassed $10 billion in AUM. During the recent highs, BlackRock increased its exposure to Ethereum by $500 million.

BlackRock recently disposed 490 BTC worth $68.7 million and increased its Ethereum position by 17%.

Can BlackRock’s BTC-to-ETH tilt be a reflection of the changes in the institutional approach to crypto?

DISCOVER: 9+ Best High-Risk, High-Reward Crypto to Buy in August 2025

Key Takeaways

  • BlackRock recently disposed 490 BTC worth $68.7 million and increased its Ethereum position by 17%. 

  • BlackRock’s over 3% stake via IBIT is a powerful statement. BlackRock’s spot Bitcoin ETF launched in early 2024 and rapidly scaled, reflecting strong demand for a regulated, low‑friction BTC vehicle among wealth platforms and treasury allocators. 

 

The post BlackRock’s Bitcoin Stash Hits 3.7% of Total Supply: Continues Adding Ethereum appeared first on 99Bitcoins.





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