Keith Partrick Gill better known as Roaring Kitty is once again active on X, formerly Twitter. The financial analyst and investor, recognized for his contributions to the subrredit r/wllstreetbets, posted an image of a green reverse Uno card on the Elon Musk-owned platform on Sunday evening. What Happened: After a silence since May 18, Roaring Kitty shared an image of a reverse uno card on Sunday evening. This marks the first post since a string of memes appeared last month. Gill, is recognized for his influential role in the meme stock phenomenon, particularly with GameStop Corporation (NYSE:…