GameStop Corp. raised about $2.14 billion from a share sale program as it capitalized on a stock rally fueled by Keith Gill’s return to YouTube.The video-game retailer has now raised more than $3 billion over the past month via share sales as retail investors powered the stock higher. The latest sale of 75 million shares implied an average price of around $28.49 each, according to Bloomberg calculations based on a statementBloomberg Terminal Tuesday....