GameStop Shares Roiled by Short-Lived Roaring Kitty Posts

GameStop Corp. shares spiked and then quickly dropped in postmarket trading Monday after cryptic social media posts showed up and then disappeared from the social media account of Keith Gill, the financial influencer known as “Roaring Kitty,” who became prominent during the 2021 meme-stock craze.

GameStop’s stock jumped as much as 13% before paring those gains to trade lower after the posts — including one depicting a cat, and another with a picture of the online character Pepe the Frog wearing Roaring Kitty’s trademark red bandanna — were deleted around 5:40 p.m. in New York, less than an hour after they went up.