A Reddit account linked to the meme-stock folk hero posted for the first time in years over the weekend, with a screenshot showing a $116 million position in GameStop stock, plus a big options bet.
GameStop shares soared roughly 80% in premarket trading Monday.
Other meme stocks also rallied: AMC shares jumped over 20%; Koss advanced more than 12% and BlackBerry shares gained 5%.
Reddit itself rallied around 5%.
Source: WSJ