Shares of GameStop and AMC each soared by more than 100% in early trading Tuesday as the surprise return of the retail day trader known as “Roaring Kitty” sparked a flurry of meme stock activity for the second straight day.GameStop spiked as much as 113% in early trading and was still up about 64% shortly after the market opened. That pushed the beleaguered video game retailer’s stock price up to nearly $50 per share – a once-unthinkable number given the company’s recent financial performance. 5 “Roaring ...