MicroStrategy (MSTR) has increased its Bitcoin holdings once again, acquiring 51,780 BTC for $4.6 billion over the past six days. This latest purchase brings the company’s total Bitcoin holdings to 331,200 BTC, which it has acquired for approximately $16.5 billion. At the current market price of around $90,000 per Bitcoin, these holdings are valued at nearly $30 billion.

To finance this acquisition, MicroStrategy utilized its at-the-market share issuance program, selling about 13.6 million shares for $4.6 billion. According to a regulatory filing on Monday, the company still has the ability to sell an additional $15.3 billion worth of stock under this program.

Just a week earlier, MicroStrategy announced a purchase of 27,200 BTC for $2 billion, bringing the total number of Bitcoin acquired in the last few weeks to around 72,000 BTC, with a total expenditure of $6.6 billion.

While the company’s stock (MSTR) dropped by 1% in premarket trading, it has experienced an impressive 400% increase year-to-date.