In a surprising twist, meme stocks GameStop Corp (GME) and AMC Entertainment Holdings Inc (AMC) witnessed a surge in buying activity on Monday afternoon, despite no apparent news catalysts. This latest movement appears to be a continuation of the retail investor momentum seen in recent weeks.

Over the past month, GameStop shares have risen by approximately 131%, while AMC shares have experienced a substantial increase of nearly 43%. These gains highlight the ongoing interest and support from retail investors in these meme stocks.

The rally in meme stocks began when Keith Gill, also known as Roaring Kitty, reemerged on social media platforms after a three-year absence. Gill, credited with igniting the meme stock mania in 2021, posted a series of videos on YouTube and Reddit's r/WallStreetBets, providing updates on his positions.

Although Gill hasn't disclosed any recent updates about his GameStop investment or posted anything on social media since Friday, retail traders remain active on platforms such as Stocktwits and Reddit. Both GameStop and AMC continue to generate high message volumes and remain among the most mentioned tickers on r/WallStreetBets over the past 24 hours.

The discussion primarily centers around Gill's next move and the heavy short interest in these meme stocks. Retail investors are encouraging others to buy and hold shares in an attempt to squeeze out short sellers.

Despite the lack of updates from Gill, both GameStop and AMC took advantage of the recent surge in their share prices. GameStop announced plans to sell up to 45 million shares, while AMC entered into agreements to issue stock in exchange for notes.

At the closing bell on Monday, GameStop shares were up 4.41% at $23.19, and AMC shares closed the day up 9.77% at $4.83. However, in the after-hours session, both stocks were trending lower.

As retail investors closely monitor the meme stock landscape, anticipation is building as to Gill's next move and whether his recent social media activity indicated a farewell to online platforms. The influence and impact of retail investors on these meme stocks continue to be a significant factor in market movements.

Disclaimer: This article is for informational purposes only and does not constitute investment advice.