On June 4th, according to Citron Research, one of GameStop's most famous short sellers, the GameStop (GME) stock held by Keith Gill nicknamed "Roaring Kitty" is more like market manipulation than traditional investment. In response, Keith Gill disclosed his holdings in GME stock. Data show that his holdings in GME are worth more than $300 million. If the stock price continues to rise, by the end of this week, he may become the first billionaire in GameStop history. Screenshots show that Keith Gill bought 5 million shares of GME stock for $115.70 million and put $65.70 million into call options, betting that the price of GME would be at least $20 per share on June 21.