Self-described Bitcoin Development Company MicroStategy (MSTR) added to its bitcoin {{BTC}} stack, purchasing 51,780 tokens for $4.6 billion over the six days ended Sunday.

With this latest purchase, the company — which began buying bitcoin in August 2020 — now holds 331,200 BTC acquired for about $16.5 billion. At the current price surrounding the $90,000 level, those holdings are worth just less than $30 billion.

To fund this latest purchase, MicroStrategy tapped its at-the-market share issuance program, selling roughly 13.6 million shares for $4.6 billion. The company has about another $15.3 billion of stock it can sell under the current program, according to a regulatory statement released Monday morning.

Over the weekend, Executive Chairman Michael Saylor took to X to tease this morning's purchase disclosure.

Just one week ago, the company announced it had purchased 27,200 bitcoin for $2 billion, thus putting buys over the past few weeks to about 72,000 BTC for $6.6 billion.

MSTR shares are down 1% premarket, but remain higher by nearly 400% year-to-date.