RMD·ResMed Inc.

Realized volatility (21d)

17.9% 22nd pct

Below its peak

-21.0%

vs 200-day average

+4.4%

Up days (1y)

48%

ResMed Inc. is currently running 17.9% annualised volatility over the last 21 sessions. Measured against RMD's own 13 years of daily returns rather than a market-wide average, that is the 22nd percentile — unusually subdued by its own history, against a typical reading of 24.1%. 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.

RMD is trading -21.0% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -19.5%, and the deepest was -44.1% in 2023. The current drawdown is already deeper than this stock's typical annual low point, which puts it in the part of its range where past recoveries began — and where past declines also continued.

Price sits +4.4% from its 200-day moving average. Against every other day in its history, that gap ranks at the 45th percentile — close to the gap it normally carries. Over the past year RMD closed higher on 48% of sessions, and it is currently 5 sessions into a rising streak.

On October specifically: over 13 years of records, RMD finished the month higher 7 of 13 times, with a median return of +0.3% and an average of +1.7%. Its strongest month historically has been July at +5.9% on average, its weakest September at -2.6%. 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: RMD has opened more than 2% away from the prior close in 121 of 3,267 sessions (3.7% of the time), with the largest gaps running +10.4% and -9.2%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 3,268 daily closes between 2013-10-15 and 2026-10-13, split-adjusted, recomputed daily. Percentiles are against RMD's own 13-year history, not a peer group or index.