Strategy Inc. disclosed on May 18, 2026 that it purchased 24,869 bitcoin between May 11 and May 17 for approximately $2.01 billion at an average price of $80,985 per coin — and separately, that it agreed on May 14 to retire $1.5 billion face value of its zero-coupon 2029 convertible notes for approximately $1.38 billion in cash, buying back the debt at roughly 92 cents on the dollar.

Taken together, the two moves are not routine. Strategy issued preferred equity to buy spot bitcoin at prices above its own average cost basis, while simultaneously unwinding a convertible debt instrument at a discount. That combination says something specific about how the company is managing its balance sheet as bitcoin trades well below last year's highs.

The purchase

The acquisition brings Strategy's total holdings to 843,738 BTC, acquired at an aggregate cost of approximately $63.87 billion — an average of roughly $75,700 per coin. The latest tranche was purchased at $80,985, meaning Strategy bought above its own average but below the roughly $105,000 bitcoin was trading around a year ago. Bitcoin was priced near $76,869 on the disclosure date, down approximately 27% year-over-year, according to price data from Fortune. Strategy is averaging into a sustained drawdown, not a recovery.

Funding came primarily from its Variable Rate Series A Perpetual Stretch Preferred Stock — ticker STRC — through an at-the-market offering program. STRC is distinct from Strategy's common equity (MSTR). It is a perpetual preferred stock that pays an annualized dividend of 11.5%, currently set monthly by the company with the stated goal of keeping the market price near its $100 stated liquidation preference. The company has registered up to $21 billion of STRC for at-the-market sales. As of the May 18 disclosure, approximately $51.5 billion remained available across all of Strategy's equity programs, including roughly $26.3 billion tied to MSTR and $17.5 billion connected to STRC.

Executive chairman Michael Saylor posted to X confirming the purchase and noting Strategy had achieved a BTC Yield of 12.6% year-to-date — the company's proprietary metric tracking bitcoin accumulation per diluted share.

The debt retirement

The convertible note repurchase is the less-covered half of the maneuver. Strategy entered privately negotiated transactions with holders of its outstanding 0% Convertible Senior Notes due 2029, agreeing to repurchase $1.5 billion in face value for approximately $1.38 billion — a $120 million discount to par. The final price is subject to adjustment based on a volume-weighted average price measurement period, per the 8-K filed with the SEC on May 14.

Zero-coupon convertibles carry no interest payment; the holder profits if the stock price rises above the conversion threshold. At roughly 92 cents on the dollar, the market is pricing the notes below face value — which tells you something about where those holders see MSTR equity and BTC over the next three years. Strategy is taking the other side of that trade, paying cash now to retire an obligation it expects will become more expensive to service if its stock recovers.

The timing matters. Strategy is spending cash to retire debt at a discount at the same moment it is issuing preferred equity to buy bitcoin. That is not contradictory — it reflects a deliberate capital structure cleanup — but it does require cash. Bitcoin Magazine noted that Saylor and CEO Phong Le acknowledged on Strategy's Q1 2026 earnings call that the company could, under select circumstances, sell bitcoin to fund STRC dividends or tax obligations. Saylor subsequently said Strategy would buy 10 to 20 bitcoin for every coin it ever sold. The debt retirement introduces a cash demand that sits alongside that stated posture.

What this implies

Strategy now holds more than 4% of bitcoin's theoretical 21 million supply cap. At $76,869 per coin, that treasury carries a market value of roughly $64.8 billion against a cumulative cost basis of $63.87 billion — a thin unrealized gain at current prices.

The STRC vehicle is the structural innovation worth watching. Unlike common equity dilution, STRC issuance adds preferred shareholders who are entitled to regular cash dividends before common equity participates. The cost of that capital is 11.5% annually, paid in cash. As the STRC book grows, Strategy's need to service those dividends grows with it — independent of bitcoin's price. The company is building a capital structure that generates recurring cash obligations against an asset that produces none.

That structure works cleanly if bitcoin appreciates. It creates pressure if bitcoin stays flat or falls. Buying back the 2029 convertibles at 92 cents cleans up one line of that structure. Issuing more STRC to fund bitcoin buys adds another. The net result is a balance sheet that is simultaneously simpler (less convertible debt overhang) and more complex (growing preferred equity with dividend obligations).

For corporate treasurers watching from outside: the Strategy model is no longer just "buy bitcoin with equity." It is a layered capital structure — common equity, preferred equity, and convertible debt — each with different cost profiles, and actively managed. The May 18 dual announcement is the clearest evidence yet that Strategy is treating its capital structure as a tradeable instrument, not a static one.