Strategy (MSTR) sold more of its perpetual preferred equity stock, Stretch (STRC), on Tuesday to buy about 1,000 bitcoin BTC$68,503.15 in the largest single-day increase for the instrument since it started trading in July 2025, according to data from STRC.live.

Strategy is the largest publicly traded holder of bitcoin, and proceeds tied to STRC trading activity support its bitcoin accumulation strategy. Tuesday’s session recorded $198.7 million in total trading volume, compared with a 30-day average of $123.3 million, according to a company dashboard.

About $177 million of the total traded above STRC's $100 par value, the level at which Strategy can activate its at-the-market (ATM) issuance program for the stock.

Tuesday's purchase follows the estimated accumulation of about 763 BTC linked to STRC activity on Monday, bringing the two-day total to some 1,762 BTC.

The estimates are derived from a methodology that approximates bitcoin purchases from ATM sales. It assumes 40% of trading volume above the $100 threshold represents ATM issuance, with a 2.5% broker commission deducted before calculating the implied bitcoin purchases.

Strategy has described STRC as resembling a short-duration, high-yield savings instrument. The company recently raised the dividend rate on STRC to 11.5%, the seventh dividend increase since the product's debut.

STRC pays monthly cash distributions. The dividend rate is adjusted each month to keep the shares trading close to their $100 par value while limiting price volatility.

Strategy's common stock rose more than 7% in pre-market trading, reaching approximately $142 per share, as bitcoin rose over $71,000 for the first time in a month.