MicroStrategy has attracted increasing attention today after buying another $2.1 billion in Bitcoin as the company sold a combination of stocks and fixed-income securities to fund the rapidly increasing purchases. This is the fifth consecutive Monday that the company has announced a purchase of digital assets. Michael Saylor, the company's co-founder and chairman, decided that the small business software maker needed to embark on a different path to survival, and over the past four years he has accumulated Bitcoin that is now worth more than $41 billion. In October, he announced plans to raise $42 billion in the next three years by selling shares on the market and issuing convertible bonds, accelerating his strategic shift. The danger now is that the cryptocurrency's massive year-long rally could reverse, in which case leveraged bets on its value could have serious consequences for its owners. (Jinshi)