Techub News reports, according to The Block, Ark Invest increased its holdings of Coinbase stock worth approximately $29.8 million on Friday through three of its funds, and also increased its holdings of BitMine stock worth approximately $17 million. This latest purchase follows two consecutive days of buying earlier this week, with Ark Invest purchasing $20 million of BitMine stock on Monday and an additional $15.3 million on Tuesday. Over the past five trading days, Ark has invested a total of approximately $52.4 million in BitMine stock.