Soros Fund Management, which is owned by George Soros, increased its positions in cryptocurrency companies late last year.
According to a Dec. 31 SEC filing, Soros Fund Management purchased $39.6 million in convertible debentures of mining company Marathon Digital Holdings.
The fund also purchased call and put options on 50,000 shares of MicroStrategy. In doing so, the fund held nearly $200 million worth of MicroStrategy preferred stock by the end of the year.
In addition, Soros Fund Management purchased 100,000 put options for Silvergate Bank.