GameStop and Roaring Kitty-themed memecoins surged on Monday after the popular former financial analyst and trader Keith Gill appeared to return to Reddit for the first time in three years — disclosing his latest position in the stock, worth over $180 million.

GME, ROAR and KITTY gained 315%, 660% and 476%, respectively, following his Reddit post, per CoinGecko data, and are currently trading for $0.014, $0.015 and $0.0017.

GME is a Solana-based memecoin using the same ticker symbol as GameStop stock but has no official affiliation with the video game retailer. ROAR and KITTY are themed on the Roaring Kitty online persona of Gill, who was involved in the GameStop short squeeze three years ago, but again have no official connection to the investor.