Did Roaring Kitty give meme-stock traders a Christmas present? While that isn’t presently clear, GameStop (GME) fans are doing a little shopping of their own this morning.  Shares of the retailer associated with Keith “Roaring Kitty” Gill, who for many is the first person who comes to mind when the company comes up, were rising pre-market Thursday. The gains, modest but noticeable at more than 3%, follow a Wednesday tweet from his X account that was characteristically vague—he often tweets clips from movie ...