PNR·Pentair plc

Realized volatility (21d)

19.7% 25th pct

Below its peak

-52.5%

vs 200-day average

-32.5%

Up days (1y)

47%

Pentair plc is currently running 19.7% annualised volatility over the last 21 sessions. Measured against PNR's own 13 years of daily returns rather than a market-wide average, that is the 25th percentile — on the quiet side for this stock, against a typical reading of 24.7%. 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.

PNR is trading -52.5% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -25.7%, and the deepest was -51.7% in 2020. 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 -32.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 1st percentile — a narrower gap than it typically runs. Over the past year PNR closed higher on 47% of sessions, and it is currently 2 sessions into a rising streak.

On October specifically: over 14 years of records, PNR finished the month higher 10 of 14 times, with a median return of +2.0% and an average of +1.4%. Its strongest month historically has been November at +4.3% on average, its weakest March at -1.1%. 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: PNR has opened more than 2% away from the prior close in 147 of 3,268 sessions (4.5% of the time), with the largest gaps running +10.0% and -10.7%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 3,269 daily closes between 2013-10-15 and 2026-10-14, split-adjusted, recomputed daily. Percentiles are against PNR's own 13-year history, not a peer group or index.