Spencer Jakab is the editor of The Wall Street Journal's Heard on the Street column and the author of a fascinating new book called The Revolution That Wasn't: Gamestop, Reddit, and the Fleecing of the Retail Investor. In January of 2021, a large group of small investors from the WallStreetBets subreddit rallied around the stock of video game retailer GameStop, which they believe had been unfairly attacked by short-selling hedge fund Melvin Capital.