Topline Robinhood shares soared Thursday after the company reported a massive uptick in retail investor activity amid the stock market and cryptocurrency boom. A Robinhood popup in downtown Manhattan on the day of the company's 2021 IPO. Getty Images Key Facts Robinhood’s stock rallied as much as 12% to $19 shortly after market open after the mobile brokerage reported a 16% month-over-month increase in customers' assets held with the company. It’s Robinhood’s highest intraday share price since Dec. 23, 2021 ...