The GameStop episode became one of the most widely discussed market events of the early 2020s. It was not only a story about one company’s share price. It was also a useful educational case about how #financial_markets can behave when #speculation, #short_selling, #social_media, #retail_investors, and #market_structure interact at high speed. From an economic perspective, the GameStop bubble showed that asset prices can move far away from company fundamentals when collective