MicroStrategy's inclusion in the Nasdaq 100 stock index led to a surge in its share value, resulting in an estimated $2.1 billion in net buying. The company's stock has been performing well due to its significant holding of bitcoin, which reached a new all-time high on Monday. MicroStrategy's stock has outperformed both bitcoin and the S&P 500, gaining 573% in 2021. The company has acquired 40% of its bitcoins over the last 40 days, with the aim of holding them until they surpass gold. However, MicroStrategy has its critics, with investment firm Citron Research announcing a short position on its stock last month.