Keith Gill's bold post lifted GameStop's premarket shares against the trend.

On Tuesday,Foreign exchange trading shares of gaming retail giant GameStop surged more than 3% in pre-market trading. This was due to stock influencer Keith Gill seemingly remaining firmly invested in his GameStop shares after previously driving the stock price up during the prior trading day.

GameStop was a leading "meme stock" surge of 2021, with its share price soaring 21% on Monday. This rally was driven by Keith Gill (known online as "DeepF------Value" and "Roaring Kitty") posting a screenshot on social media platform Reddit, showing he had made a $116 million bet on GameStop.

After the market closed on Monday, Gill posted another screenshot indicating he still holds 5 million shares of GameStop, approximately 1.8% of its publicly traded shares, and has 120,000 call options.

However, several media outlets reported they could not independently verify the authenticity of these screenshots. Meanwhile, according to The Wall Street Journal, the investment platform E-Trade that Gill uses is discussing whether to ban him from the service on suspicion of market manipulation.

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