BlockBeats News, December 18, amid a continued downturn in the US stock crypto sector, Ark Invest, led by Cathie Wood, increased its holdings of BitMine, Coinbase, and Bullish stocks on Wednesday.According to its trading files, Ark Invest purchased $10.56 million worth of BitMine stock, $5.9 million worth of Coinbase stock, and $8.85 million worth of Bullish stock on Wednesday through its three exchange-traded funds (ETFs).BitMine (BMNR) fell by 6.59% on Wednesday, closing at $29.32, down approximately 24% from five days ago.