GameStop and AMC Entertainment rose in preopen trade on Thursday, after their spectacular Wednesday's moves. GameStop /zigman2/quotes/203755179/composite GME -1.12% , the video-game retailer that's popular on the Reddit Wall Street Bets forum, rose 48% to $135.51 after doubling Wednesday. AMC /zigman2/quotes/200235402/composite AMC -5.76% , the movie-chain operator, rose 17% after rising 18% on Wednesday.





