Back in 2021, the meme stock frenzy was at its peak: Roaring Kitty AKA Keith Gill, and young day traders gleefully upended financial markets. Roaring Kitty disappeared for a bit before returning just a couple months ago. His disciples that followed him into the markets, however, never left. That's according to Nathaniel Popper in his new book, The Trolls of Wall Street: How the Outcasts and Insurgents are Hacking the Markets). Today on the show, why Nathaniel believes these day traders are here to stay and where they're putting their money now. **Related Episodes: **GameStop and the Short Squeeze) The tower of Nvidia) *For sponsor-free episodes of The Indicator from Planet Money, subscribe to Planet Money+ via Apple Podcasts or at plus.npr.org). Music by Drop Electric). Find us: TikTok), Instagram), Facebook), Newsletter).*Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)