Chewy Inc CHWY shares are moving lower in extended trading Tuesday after meme stock trader Keith Gill, also known as "Roaring Kitty," sold his stake in the online pet retailer. What Happened: According to a new 13G filing with the SEC, Gill sold his entire stake in Chewy. The filing indicates Gill had a 0% stake in the pet retailer as of Sept. 30. Chewy shares fell more than 2% on the news, while GameStop Corp GME shares crept higher, last up about 1.3%, according to Benzinga Pro. Gill is best known for playing an influential role in the historic 2021 meme stock craze that saw GameStop and other heavily shorted names squeeze higher. He made a return to social media earlier this year following a three-year absence.