MicroStrategy’s most recent previous disclosure was in mid-September when it announced the purchase of 7,420 bitcoins (BTC) for $458.2 million. That brought its holdings to that point to 252,220 bitcoins acquired for a total of $9.9 billion, or an average price of $39,266 each. At the current price of about $72,000 the company’s bitcoin is worth more than $18 billion.