1 Warning Before You Buy This Cathie Wood Stock

Ark Invest's focus on owning innovative and disruptive businesses has made its founder and CEO Cathie Wood a closely followed investment professional. Someone looking to put some money into the stock market might follow her trading moves to find potential investment ideas.In the Ark Innovation ETF, the company's flagship fund with $5.4 billion in assets (as of Dec. 9), Roku (ROKU 1.33%) is one of the top positions. It represents a sizable 9.3% of the holdings in the exchange-traded fund (ETF).The streaming ...