Strategy books a $20.91 billion third-quarter bitcoin gain; bitcoin now sits 13.9% above its $75,441 cost

Strategy Inc, the largest corporate holder of bitcoin, estimated in a Form 8-K filed Monday that it booked a $20.91 billion gain on digital assets in the three months ended September 30, along with $1.88 billion of deferred tax expense. Bloomberg headlined the update as a return to profitability. Strategy has not yet reported full third-quarter results, so the 8-K gives a gain and a tax figure, not net income.

The number behind the number

The 8-K puts the carrying value of the bitcoin at $70.82 billion on September 30 and the total purchase cost at $63.95 billion. The difference is a $6.87 billion cushion. Because a gain for the quarter is the change in that cushion (purchases add equal amounts to value and cost), the $20.91 billion gain implies the position was about $14 billion below cost on June 30. That is our arithmetic, not a figure Strategy states.

The tax side moved with it. Strategy says its $4.12 billion deferred tax asset from the June 30 loss was reversed and the matching valuation allowance released, leaving a $1.88 billion net deferred tax liability on the bitcoin. Gain less deferred tax is $19.03 billion, before operating costs, interest and preferred dividends. Those come with the full results.

Where bitcoin stands against the cost

As of October 4, Strategy holds 848,000 bitcoin at an average cost of $75,440.70 each, or $63.97 billion in total. Coinbase showed bitcoin at $85,892.70 this morning, 13.9% above that average. At that price the holdings are worth about $72.8 billion, roughly $8.9 billion over cost (our arithmetic). The cushion is price-dependent: the 8-K's figures imply a September 30 bitcoin price near $83,550 ($70.82 billion over 847,666 coins), and the break-even is the $75,441 average.

What the company actually did last week

Strategy spent about $176 million on repurchasing its STRC preferred stock in the week, six times the $28.7 million it put into bitcoin. It sold 92,894 shares of its common stock under its at-the-market program for $15.7 million in net proceeds, and used that to fund the bitcoin purchase. We covered the same pattern in an earlier report.

What to keep in mind

A fair-value gain is an accounting entry that follows the bitcoin price. It adds no cash, and it reverses if the price falls. The company's own cash position is the USD Reserve, which exists to pay preferred dividends and interest. Strategy's common stock was quoted at $163.43 pre-market on Nasdaq, up 2.1% from Friday's $160.01 close. For live prices see crypto prices.

Sources: Strategy Form 8-K, October 5, 2026 (SEC EDGAR); Strategy filings; Bloomberg; Coinbase; Nasdaq. Percentages and dollar differences are our arithmetic. This is market information, not investment advice.