GFL·GFL Environmental Inc. Subordinate voting shares no par value

Realized volatility (21d)

33.5% 54th pct

Below its peak

-17.1%

vs 200-day average

+5.0%

Up days (1y)

47%

GFL Environmental Inc. Subordinate voting shares no par value is currently running 33.5% annualised volatility over the last 21 sessions. Measured against GFL's own 7 years of daily returns rather than a market-wide average, that is the 54th percentile — close to its own typical level, against a typical reading of 32.4%. The distinction matters because a number that looks calm for one stock is turbulent for another, and the absolute figure on its own tells you neither.

GFL is trading -17.1% below its running peak. Across 6 full years on file, its median worst-drawdown-in-a-year was -23.2%, and the deepest was -36.5% in 2022. The current pullback is therefore shallower than what this stock gives back in a typical year, which is context worth having before treating it as a dislocation.

Price sits +5.0% from its 200-day moving average. Against every other day in its history, that gap ranks at the 51st percentile — close to the gap it normally carries. Over the past year GFL closed higher on 47% of sessions, and it is currently 2 sessions into a rising streak.

On October specifically: over 6 years of records, GFL finished the month higher 3 of 6 times, with a median return of -0.9% and an average of -1.2%. Its strongest month historically has been November at +9.5% on average, its weakest May at -1.6%. Seasonality is a weak signal on its own — a decade is a small sample and regimes change — but it is a real distribution rather than a rule of thumb.

Overnight risk is measurable too: GFL has opened more than 2% away from the prior close in 116 of 1,660 sessions (7.0% of the time), with the largest gaps running +11.1% and -13.9%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 1,661 daily closes between 2020-03-03 and 2026-10-09, split-adjusted, recomputed daily. Percentiles are against GFL's own 7-year history, not a peer group or index.