During one crazy week in January 2021, a motley crew of retail traders on Reddit's r/wallstreetbets forum had seemingly done the impossible—they had brought some of the biggest, richest players on Wall Street to their knees. Their weapon was GameStop, a failing retailer whose shares briefly became the most-traded security on the planet and the subject of intense media coverage. This is the riveting story of how the meme stock squeeze unfolded, and of the real architects (and winners) of the GameStop rally. Drawing on his years as a stock analyst at a major bank, Jakab exposes technological and financial innovations such as Robinhood's habit-forming smartphone app as ploys to get our dollars within the larger story of evolving social and economic pressures.