Shares of GameStop shot to session highs Thursday after meme stock leader Roaring Kitty scheduled a livestream on Youtube, which would be his first one in almost four years.

Roaring Kitty, whose real name is Keith Gill, set the time for his live chat at noon Friday, which traders speculated would be a bullish discussion about his massive GameStop stake. The investor hosted three-hour livestreams in August 2020 explaining his investing thesis behind his favorite brick-and-mortar video game retailer.

GameStop popped 33% higher to trade around $42 apiece after this livestream update. Trading was halted for volatility. The stock is up almost 70% this week.

There were already more than 8,000 people waiting in the livestream and countless comments were flowing through the chat box.

Gill, who goes by DeepF——Value on Reddit, resurfaced online recently more than three years after sparking the historic trading mania in 2021 that burned short-selling hedge funds. Last Sunday, he started posting screenshots of his E-trade portfolio holding 5 million shares of GameStop common shares and 120,000 call options. Combined, they have a market value of at least $200 million now.

He seemed to have held onto his positions as of Monday night. Gill stopped posting updates after the Wall Street Journal reported that Morgan Stanley’s E-Trade broker was considering booting him because of the worry that what he was doing could amount to market manipulation. 

The investor is a former marketer for Massachusetts Mutual Life Insurance. The mania in 2021 led to a series of congressional hearings, featuring Gill, around brokers’ practices and gamifying retail trading.