October used to print for $BTC.

Pre-ETF era:
2019: +11%
2020: +28%
2021: +40%
2022: +6%
2023: +30%

Post-ETF era:
2024: +10%
2025: -4%
2026: -3%

The pattern flipped. ETFs brought institutional flows but killed the retail seasonality edge. October went from Uptober to just another month. TradFi absorption = different market structure. Adapt or get rekt.