October 2025 will go down as the most cursed month in crypto history. | Credit: Shutterstock. Key Takeaways October, typically seen as bullish, turned into crypto’s worst month in nearly a decade. The Oct. 11 black swan event wiped out billions and shattered investor confidence. Bitcoin clawed back losses, but altcoins remain deeply bruised. October 2025 was supposed to be another “Uptober”—crypto’s seasonal rally where markets turn green and optimism runs high. Instead, it became one of the blo ...