Strategy Inc., formerly known as MicroStrategy, overtook Block Inc. in market capitalization after closing at $128.56 per share on Sept. 10, 2026, giving it a valuation of approximately $51.07 billion and a reported ranking as the 217th-largest public company in the United States. Block was valued at about $47.8 billion on the same date. Strategy had 400.857 million Class A shares outstanding, and the comparison is based solely on share price multiplied by shares outstanding. Strategy held 845,050 Bitcoin as of Sept. 7, 2026, acquired for an aggregate $63.73 billion, or an average $75,412 per coin including fees and expenses. The company began buying Bitcoin in August 2020 under a board-approved Treasury Reserve Policy and has funded subsequent purchases through equity offerings, convertible notes and preferred-stock issuances. It also maintains a $5.1 billion USD Reserve and $1.44 billion in cash, while continuing to operate its enterprise analytics software business. Block, which operates Square and Cash App, has a far smaller Bitcoin position and trailing 12-month revenue of nearly $25 billion, making the market-cap crossover a comparison between a Bitcoin-concentrated balance sheet and a payments-and-software company.