He started June 2019: https://www.reddit.com/r/wallstreetbets/comments/e3kpbc/gme_...

And called it for Jan 2021: https://www.reddit.com/r/wallstreetbets/comments/e8wqvs/gme_...

And his Youtube channel: https://www.youtube.com/channel/UC0patpmwYbhcEUap0bTX3JQ