Annualized realized volatility — the standard deviation of daily log returns over a rolling window, scaled by √365. Three windows are shown for each asset: 7-day (short-term, reacts fast and spikes hard), 30-day (the conventional monthly gauge), and 6-month (the slow structural trend).
Use the legend to hide series and focus on one horizon, or show all to compare. Higher values mean larger price swings; volatility spikes around market events and compresses in quiet periods.
Annualised realised volatility: the standard deviation of daily log returns over a rolling window, scaled by √365. Three windows are drawn per asset because the window choice, not the market, decides what the line says. 7-day reacts within days and spikes hard; 30-day is the conventional gauge; 90-day is the regime. One violent week shows in all three and means something different in each.
Realised, not implied. This is what the price DID, computed after the fact. It is not the market's expectation of what it will do, and it cannot lead anything — by construction it lags by up to its own window.
Annualising a 7-day window is an extrapolation. Multiplying a week's movement out to a year assumes the week was typical, which is exactly what a spike says it was not. Compare assets on the same window and be sceptical of the short one's absolute level.