GameStop was the second-most actively traded stock, with 4.4 million shares changing hands by 4:30 a.m. ET. It was the first post from Gill's Reddit account, which was central in fuelling a meme stock trading frenzy about three years ago by sharing screenshots of his bullish GameStop trades.
The latest investor updates on stocks that are trending on Monday.
Keith Gill, writing on Reddit, posted a screen shot that shows he has a $181.4 million position in the meme favorite.