Strategy's bitcoin buys are capped by its preferred dividend load

When Strategy reported buying 950 bitcoin for nearly $76 million last week, its first purchase in roughly three weeks, the number arrived in the financial disclosure Fortune reported on Sept. 21, which it read as cementing Strategy's status as the world's largest corporate bitcoin holder: total holdings now stand at 846,000 coins, about 4% of outstanding supply.

The same disclosure window carried $174 million of repurchases of STRC, the dividend-paying preferred Strategy created last year to raise cash from investors for more coin, and as this publication wrote when the filing landed, the buy was the residual of the preferred stack: whatever the dividend obligation and the equity price leave over. That works out to roughly 44 cents of bitcoin for every dollar of preferred retired, and 950 coins at about $80,000 apiece against a market that touched nearly $86,000 as the purchase was disclosed.

Bitcoin's rally is context rather than cause. The token rose more than 6% in 24 hours to nearly $86,000, while Strategy shares climbed nearly 9% to $167, the equity behaving like the proxy that 846,000 coins make it. Fortune traces August's turn in buying pressure to the Treasury's announcement that it would double purchases of older long-term government bonds, a revival that followed bitcoin's fall to $58,000 in June, roughly 53% below its $125,000 mark last October.

Conviction is a poor guide to the sequence. Saylor has long championed a "never sell your Bitcoin" mantra, yet the company has sold bitcoin four times in the past four months, sales Fortune attributes to a balance sheet squeezed by the decline. STRC was the instrument built to keep the buying alive, and retiring the preferred cuts the dividend payments that sit between Strategy and its next purchase.

Buying has resumed, with Fortune counting two purchases in the past month, but the scale has shrunk: this week's $76 million sits well below the $369.7 million purchase this publication reported on Aug. 31. Chris Beauchamp, chief market analyst at IG Group, told Fortune the smaller size need not point to concern and may simply reflect gradual accumulation as the price climbs. The mechanical reading is less generous to the sector story: Strategy's accumulation rate is set by how much preferred it can place or retire, leaving the corporate-treasury bid an output of the capital structure rather than a call on price.

Strip Strategy out and, as this publication argued on Sept. 18, the category all but disappears — one August purchase supplied 78% of public companies' bitcoin buys last quarter. The line to watch in the next filing is therefore the STRC one. While preferred retirements outrun coin purchases, the largest corporate bitcoin holder is retiring its own paper faster than it accumulates coin, and the quarter's corporate-treasury total will track that gap rather than the price of the asset it holds.