A Difficult Day for the Cryptocurrency Market: Michael Saylor and Tom Lee’s Losses Exceed $10 Billion
The sharp decline in the cryptocurrency market has also significantly affected the balance sheets of companies known for their institutional capital management strategies.
According to the data, Strategy, led by Michael Saylor, has suffered total losses of more than $12.4 billion on its Bitcoin portfolio, while BitMine, led by Tom Lee, has lost more than $10 billion on its Ethereum portfolio.
Strategy (MSTR), the company with the world’s largest institutional Bitcoin portfolio, has been accumulating Bitcoin since August 2020 through share sale programmes and convertible bond offerings. The company owns approximately 3.9% of the total Bitcoin supply, with an average purchase cost of around $75,540 per coin. According to current data, the Bitcoin held by Strategy is valued at approximately $51.5 billion, while the total investment amount is estimated at $63.9 billion. This points to an unrealised loss of approximately $12.39 billion for the company.
On the other hand, BitMine Immersion Technologies (BMNR), which has attracted attention with its institutional investment strategy in Ethereum, has also experienced a significant decline in value. Holding more than 4% of the total Ethereum supply as of May 2026, the company is pursuing a “5% supply accumulation” strategy led by Fundstrat co-founder Tom Lee. With backing from investors such as MOZAYYX, Founders Fund, Pantera, Galaxy Digital and ARK Invest, most of the company’s assets are managed through staking.
According to the data, BitMine’s Ethereum portfolio is currently valued at approximately $8.68 billion, while its total investment stands at $18.83 billion. As a result, the company’s unrealised loss amounts to approximately $10.16 billion. Its year-to-date loss stands at $5.36 billion.
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