Bitcoin Weekly Volatility
Moderate weekly volatility: within ±10% covers most weeks.
Extreme threshold (rare): moves greater than ±15% in absolute terms, with those above ±20% identified as major outlier events.
This heavy-tailed, leptokurtic behavior persists at the weekly level, where extreme deviations are rare but far more frequent than in traditional asset classes. Most weekly candles cluster in the single-digit percentile moves, while tail risks — moves >15% — stand out as outlier events.

