ToplineMeme stock mania picked up where it left off Monday, with shares of retail investor favorites AMC and GameStop exploding to their highest levels of 2024 based almost entirely on social media hype.AMC and GameStop shares are skyrocketing this week like it's 2021.SOPA Images/LightRocket via Getty Images Key FactsGameStop’s stock skyrocketed as much as 112% and AMC’s stock soared up to 129% shortly after market open, building on both stocks’ roughly 75% gains during Monday trading. Shares of brick-and- ...