WAT·Waters Corporation

Realized volatility (21d)

26.4% 60th pct

Below its peak

-3.2%

vs 200-day average

+17.6%

Up days (1y)

50%

Waters Corporation is currently running 26.4% annualised volatility over the last 21 sessions. Measured against WAT's own 13 years of daily returns rather than a market-wide average, that is the 60th percentile — close to its own typical level, against a typical reading of 23.9%. 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.

WAT is trading -3.2% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -21.5%, and the deepest was -33.5% 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 +17.6% from its 200-day moving average. Against every other day in its history, that gap ranks at the 87th percentile — a wider gap than this stock usually carries. Over the past year WAT closed higher on 50% of sessions, and it is currently 2 sessions into a falling streak.

On October specifically: over 13 years of records, WAT finished the month higher 7 of 13 times, with a median return of +3.3% and an average of +1.5%. Its strongest month historically has been July at +3.7% on average, its weakest February at -2.3%. 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: WAT has opened more than 2% away from the prior close in 103 of 3,267 sessions (3.2% of the time), with the largest gaps running +11.7% and -46.9%. 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, WAT moved an average of 0.6% in the session after earnings, closing higher 3 of those 3 times, with a median move of +0.7% and a largest of +1.0%.

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