Ark Invest, under the leadership of Cathie Wood, has expanded its investment in Bullish by acquiring approximately $5 million worth of shares. On Thursday, the firm purchased 139,117 shares across three of its ETFs, despite Bullish's stock price dropping 2.73% to $35.96. This follows a previous acquisition of $4.4 million in Bullish shares earlier in the week. The stock has seen a decline of 8.9% over the past five trading sessions and 14.2% over the past month.