Believe it or not, there are real-world financials to consider. : In all the recent market mania, it might be easy to forget that there’s an actual company at the center of the frenzy. Here’s a quick look at the real-world prospects for GameStop, which begins the week with a market cap of more than $20 billion, up from $1 billion at the start of the year. Running the numbers. GameStop’s annual sales peaked at nearly $10 billion before falling to $6.5 billion in its most recent pre-pandemic fiscal year.