The reported purchase
Strategy’s September 28, 2026 Form 8-K reports 1,665 BTC acquired for $142.7 million during September 21–27, at an average $85,681 per BTC, including fees. The purchase was funded with MSTR ATM proceeds.
At the end of the period, Strategy reported 847,666 BTC held at an aggregate purchase cost of $63.95 billion, or $75,437 per BTC on average. The company-reported total is retained even though adding rounded weekly quantities produces a small difference.
Financing and buybacks
The same period included $246.2 million of net MSTR ATM proceeds. The filing allocated $142.7 million to bitcoin and $103.5 million to STRC repurchases. Strategy repurchased 1,534,530 STRC shares for $151.7 million, also using $48.1 million of USD Cash. All figures are for September 21–27, 2026 and come from the same filing.
Cash balances
At September 27, the USD Reserve was $5.02 billion and USD Cash was $1.00 billion. The filing says $22.1 million of the USD Reserve funded preferred dividends during the period.
This is a dated archive of the September 28 disclosure. For the most recent reviewed weekly filing, use this week. For the complete launch dataset, use the 2026 purchase history.
Primary sources
Source documents checked October 2, 2026. The dates attached to figures describe the reporting period, which may be earlier.