GameStop (GME) shares are extending gains this morning as investors cheer the company’s role in a limited-time Pokémon distribution event. Starting Sept. 26, GameStop stores in the U.S. are handing out exclusive serial codes for Shiny Miraidon and Shiny Koraidon, legendary Pokémon from the Scarlet and Violet games that are unobtainable in the wild. More News from Barchart Including today’s gains, GameStop stock is up nearly 20% versus its price at the start of September. www.barchart.com Why Is GameSt ...