Microstrategy’s $ 1.5 billion bitcoin buy boosts its holdings to 402,100 BTC, as the company eyes aggressive expansion via a $ 42 billion plan. $ 1.5B Bitcoin Buy Propels Microstrategy’s Stash to 402,100 BTC Software intelligence firm Microstrategy Inc. (Nasdaq: MSTR) disclosed significant updates in a filing with the U.S. Securities and …