Key Takeaways Keith Gill, a key player in the 2020 and 2021 meme-stock craze known as "Roaring Kitty," posted an image of a dog on X Thursday. Shares of Chewy and Petco briefly spiked higher Thursday after the post and were halted due to high volume. The stock swings come after Gill posted on social media in May for the first since 2021, sparking volatility in shares of GameStop and other meme stocks. Shares of pet-focused companies Petco (WOOF) and Chewy (CHWY) briefly spiked Thursday after Keith Gill, a k ...