Commenters have likened the recent retail “meme” trading in stocks such as GameStop Corp. to buying a ticket on a roller coaster—“You don’t go on a roller coaster because you end up in a different place, you go on it for the ride and it’s exciting because you’re part of it.” See, Bailey Lipschultz and Divya Balji, Historic Week for Gamestop Ends with 400% Rally as Shorts Yield, Bloomberg (January 29, 2021).

    The comparison is apt in a number of respects. These retail traders, led by some members of the “WallStreetBets” group on the Reddit social media platform, “got on” GameStop a couple weeks ago at just under $20 a share, and, despite its rapid rise to a high of just under $500 a share, I think most people expect (including the meme traders) that the price at which this turbulent ride will end is somewhere around where it began. After all, GameStop’s fundamentals have not changed. It remains a brick-and-mortar business that was devastated by the pandemic, and it is expected to steadily lose market share to online vendors.

    For anyone interested in the mechanics of the “short squeeze” and how these traders managed to move price…