https://www.reuters.com/article/gamestop-results/gamestop-shares-drop-as-executives-mum-on-turnaround-plan-details-idUSKBN2G425T >BOSTON (Reuters) -GameStop Corp, at the center of this year's "meme stock" trading frenzy, on Wednesday reported a 25% jump in quarterly sales but failed to lay out fresh details about how it plans to refashion itself into a gaming and entertainment retailer.