10月からハックトバーまで: ビットコインのシーズナルパターンは時代遅れか?

The cryptocurrency market faced renewed volatility during what is typically one of its strongest historical performing months, as Bitcoin recorded a significant 7.3% drop in October 2026. This downward movement follows a similar underperformance in the previous year, signaling a potential shift in broader market dynamics. Analysts suggest that maturing market structures, changing macroeconomic conditions, and institutional involvement are eroding traditional retail-driven calendar anomalies. As historical signals become less reliable, market participants are increasingly forced to rely on real-time data rather than seasonal expectations. Consequently, portfolio managers must adapt their risk management strategies to account for the breakdown of these legacy trading behaviors. The persistent failure of Uptober to materialize highlights the evolving and unpredictable nature of digital asset cycles.