Michael Saylor shared a StrategyTracker chart on X this Sunday showing Strategy holds 847,363 bitcoin valued at $50.88 billion as of June 28, 2026, with 113 purchase events and an average cost basis of $75,653 per BTC. That chart displays orange bubbles for MSTR's buys overlaid on bitcoin price history, highlighting aggressive accumulation especially in 2024-2025 with the average purchase price line trending upward.