Gamestop jumps after ‘Roaring Kitty’ account claims stake BBC.comGameStop shares jump 30% after ‘Roaring Kitty’ trader posts account showing $116 million position CNBCVideo ‘Meme stock’ craze helps GameStop shares soar ABC NewsGameStop stock soars after ‘Roaring Kitty’ reveals $175 million bet on the retailer Yahoo FinanceGameStop Soars Premarket on ‘Roaring Kitty’ Keith Gill’s $116M Bet Post Bloomberg