It has been a while since GameStop has caused a stir in the stock market. Now, shares look like they are re-entering the spotlight, thanks to a post by trader Keith Gill on Friday, as well as the videogame retailer’s coming earnings report.

GameStop reports earnings after markets close Tuesday, with analysts expecting lower sales and a larger net loss than in the year-ago quarter. The stock has had a calmer summer after a period of volatility earlier this year.

GameStop's stock surge may not be sustainable due to high short interest, declining revenue, lack of earnings, and operational challenges.