TechFlow news, according to crypto KOL "The Bitcoin Therapist" citing 13F filings submitted to the SEC, among the top five publicly traded bitcoin mining companies by global market capitalization—Riot Blockchain, Marathon Digital Holdings, Cipher Mining, Hut 8 Mining, and TeraWulf—BlackRock is the second-largest shareholder in four of them: Riot Blockchain, Marathon Digital Holdings, Cipher Mining, and TeraWulf.
Hut 8 Mining is a Canadian company, while the other four are from the United States.





