Strategy, the company formerly known as MicroStrategy, is sitting on an unrealized loss of roughly $10.8 billion across its Bitcoin treasury. The firm that turned corporate treasury management into a high-conviction crypto trade is now nursing the largest paper loss in its six-year Bitcoin accumulation history.

The company holds 843,706 BTC with a total cost basis of approximately $63.8 billion. As of early June 2026, those coins are worth about $53 billion. That gap, roughly 17% below what the company paid, has sent MSTR stock tumbling 77% from its all-time high.

The numbers behind the drawdown

Strategy’s average acquisition cost sits at approximately $75,700 per Bitcoin. With Bitcoin trading well below that level, every single coin the company bought on average is now worth less than what was paid for it.

The $10.8 billion unrealized loss is the worst the firm has recorded since it first started buying Bitcoin in August 2020.

MSTR has functioned as a leveraged Bitcoin proxy for years, amplifying both the upside and the downside. A 77% decline from peak prices means shareholders who bought at the top have watched roughly three-quarters of their investment evaporate.

Strategy sells Bitcoin for the first time in years

In late May 2026, Strategy did something it had famously avoided for years. It sold Bitcoin.

The sale was small, just 32 BTC at an average price of $77,135, generating about $2.5 million. The proceeds went toward distributing dividends on the company’s STRC preferred stock. In the grand scheme of an 843,706-coin portfolio, 32 BTC is essentially a rounding error.

The sale has drawn scrutiny and criticism, with many questioning whether the concentrated treasury strategy remains viable in a prolonged bear market. The optics of selling Bitcoin to meet obligations while sitting on a $10.8 billion unrealized loss are, to put it gently, not ideal.

Saylor blames the AI boom

Michael Saylor has offered his own explanation for Bitcoin’s struggles. He has pointed to what he describes as a significant capital migration, estimated at around $400 billion, flowing into AI infrastructure. Spot Bitcoin ETFs have experienced outflows during this period, which aligns with the idea that money is moving elsewhere.

What this means for investors

The 77% stock decline raises serious questions about the leveraged Bitcoin exposure model. MSTR historically traded at a premium to the value of its underlying Bitcoin holdings because investors were paying for the convenience and the leverage. In a downturn, that leverage works in reverse, amplifying Bitcoin’s decline rather than simply tracking it.

For crypto investors watching from the sidelines, the key risk to monitor is whether Strategy’s small Bitcoin sale was a one-time event or the beginning of a pattern. Strategy remains by far the largest corporate Bitcoin holder, and any sustained selling pressure from a wallet that size would ripple across the market.