IEX·IDEX Corporation

Realized volatility (21d)

13.2% 15th pct

Below its peak

-3.5%

vs 200-day average

+11.5%

Up days (1y)

51%

IDEX Corporation is currently running 13.2% annualised volatility over the last 21 sessions. Measured against IEX's own 13 years of daily returns rather than a market-wide average, that is the 15th percentile — unusually subdued by its own history, against a typical reading of 19.1%. 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.

IEX is trading -3.5% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -20.3%, and the deepest was -35.5% in 2020. 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 +11.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 77th percentile — a somewhat wider gap than its own norm. Over the past year IEX closed higher on 51% of sessions, and it is currently 3 sessions into a rising streak.

On October specifically: over 13 years of records, IEX finished the month higher 8 of 13 times, with a median return of +4.4% and an average of +0.6%. Its strongest month historically has been November at +4.7% on average, its weakest September at -0.6%. 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: IEX has opened more than 2% away from the prior close in 88 of 3,267 sessions (2.7% of the time), with the largest gaps running +6.3% and -11.6%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

Across the last 3 dated reports on file, IEX moved an average of 0.7% in the session after earnings, closing higher 2 of those 3 times, with a median move of +0.2% and a largest of +1.9%.

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