Public company KULR, which provides energy storage solutions for aerospace and defense companies, just bought more Bitcoin for its treasury.

The San Diego, California-based firm started stacking sats in December when it bought 217.18 Bitcoin for approximately $21 million. Then, last month, it bought another $21 million worth of orange coins. 

And on Tuesday, KULR—which trades on the NYSE—announced another $10 million purchase. It now holds 610.3 BTC, worth over $59 million, according to today’s price of $97,000 per coin. 

Its stock is today down by more than 4%, trading at $2.26 a share. 

KULR did not immediately respond to Decrypt’s request for comment,