Cathie Wood still believes in the Robinhood story, buys nearly $80 million worth during 10% drop

Catherine Wood, chief executive officer of ARK Investment Management LLC, speaks during the Milken Institute Global Conference in Beverly Hills, California, on Monday, Oct. 18, 2021.
Kyle Grillot | Bloomberg | Getty Images

Innovation investor is doubling down on Robinhood following an earnings-induced sell-off in the stock trading app.