Topline GameStop shares soared in premarket trading on Monday after Roaring Kitty, the man who inspired the 2021 meme stock frenzy, posted what appeared to be evidence of a massive position in the game retailer, the latest buying mania for the brick-and-mortar store following the meme stock celebrity’s return to social media after a years-long absence. Meme stock GameStop rallied again on Monday in premarket trading. SOPA Images/LightRocket via Getty Images Key Facts Shares more than doubled in premarket tr ...