Keith Patrick Gill is an American financial analyst and investor known for his posts on the subreddit r/wallstreetbets. His analyses of GameStop stock, and details of his resulting investment gains—posted on Reddit under the username DeepFuckingValue (DFV) and on YouTube and Twitter as Roaring Kitty—were cited as a driving factor in the GameStop short squeeze of January 2021, and as a spark for the subsequent trading frenzy in retail stocks. The rising stock value allowed Gill to turn a US$53,000 investment into one worth close to $50 million.