The resurgence of "Roaring Kitty" has sent meme stocks and memecoins soaring, reviving the frenzy of 2021. Keith Gill's return to social media platform X sparked a surge in GameStop's stock, halted multiple times due to volatility. Gill's subreddit /WallStreetBets was at the forefront of the 2021 meme stock craze, with GameStop and AMC Entertainment shares skyrocketing over 1,000%.

Memecoins like Dogecoin and SHIB also saw a significant boost, with DOGE currently trading at $0.15. The GMCI Meme Index, tracking the largest memecoins by market cap, rose 6.4% to 299.49. The GME meme token, unrelated to GameStop, traded over 1,200% higher with a volume of $70 million.

The 2021 frenzy led to regulatory scrutiny, with the SEC, New York and Texas attorneys general, and a Congressional hearing investigating the matter. Robinhood, a key player, faced controversy over settlement cycles and trading halts. Today, crypto trading is a significant part of Robinhood's business, with volumes increasing 224% year-over-year to $36 billion.

Despite the SEC issuing a Wells Notice for alleged securities violations, Robinhood remains committed to making crypto accessible to Americans. The return of Roaring Kitty has reignited the meme stock and memecoin phenomenon, showcasing their enduring popularity.