Shares of GameStop are soaring before the market open on Monday following speculation that the man at the center of the pandemic meme stock craze owns a large number of shares of the video game retailer that may be worth millions.

GameStock’s stock jumped more than 87% in premarket trading.

Keith Gill, better known as “Roaring Kitty” on social media platforms YouTube and X, also goes by the name Deep F- – – – – – Value on Reddit. Late Sunday the Reddit account shared a screenshot in the r/SuperStonk forum that people are speculating could be an image of the shares and call options Gill holds in GameStop. The image showed that Gill may hold 5 million shares of GameStop that were worth $115.7 million as of the closing price on Friday. The screenshot also showed 120,000 call options in GameStop with a $20 strike price that expires on June 21. The call options were bought at around $5.68 a piece.