MicroStrategy has been purchasing Bitcoin consistently, amassing a total of $45 billion in the digital currency. The company's strategy involves raising capital through various financial instruments, such as convertible debt offerings and stock sales, to fund these purchases. Despite being a software company, MicroStrategy now primarily identifies as a Bitcoin Treasury company, focusing on generating shareholder value through its Bitcoin holdings. The company has seen significant investment income from its Bitcoin strategy, with $18.6 billion in unrealized investment income reported. Michael Saylor, the executive chairman, discusses the potential for MicroStrategy to be included in the S&P 500, contingent on adopting fair value accounting and achieving significant investment income. The company uses regulated exchanges like Coinbase to purchase Bitcoin discreetly, aiming not to influence market prices. Saylor also notes the changing financial landscape, with Bitcoin becoming a viable capital asset for large public companies, potentially replacing traditional treasury assets like Treasury bills.