On Tuesday,Cathie Wood-led Ark Invest made a significant purchase of Roku Inc (NASDAQ:ROKU) shares. This decision comes amidst a period of market volatility and recent bearish sentiments from analysts toward Roku’s revenue growth prospects. The Roku TradeArk Invest’s acquisition of Roku shares stands out as the day’s most notable transaction. The investment firm purchased $16.9 million of Roku stock across multiple funds, including Ark Fintech Innovation ETF (NYSE:ARKF), ARK Innovation ETF (NYSE:ARKK), and ARK Next Generation Internet ETF (NYSE:ARKW). On Tuesday, Roku stock closed 2.9% lower a…