Shares of the Virginia-based company, which owns about 2% of all bitcoin, has outperformed even Nvidia over the last five years.

MicroStrategy announced Monday that it acquired another 15,350 bitcoins, bringing its total holdings to of the token to 439,000.

The reconstituted Nasdaq 100 index, which also now includes Palantir and Axon Enterprise, will begin trading on Dec. 23.

MicroStrategy shares rose in premarket trading Monday after Bitcoin set a new record high and the company's stock was added to the Nasdaq 100 index. Monitor these important chart levels.

Some 40% of MicroStrategy's bitcoin position has been acquired in the past 40 days, wrote Bernstein analysts on Monday. Within the past month alone, MicroStrategy purchased more than 100,000 bitcoins for $10.5 billion, SEC filings show.

MicroStrategy shares rose about 3% on Monday as the software company and bitcoin buyer was set to join the tech-heavy Nasdaq 100 index, further brightening the prospects of the stock. The $25.7 trillion index that houses the largest non-financial companies will now gain indirect exposure to bitcoin via MicroStrategy,

MicroStrategy's innovative approach to leveraging Bitcoin holdings drives impressive stock performance, despite risks. Learn more about MSTR stock here.

MicroStrategy, the crypto-buying software company, said Monday it bought another $1.5 billion of bitcoin last week. The company has now bought bitcoin for six straight weeks. It acquired 15,350 bitcoins last week for $1.