IDXX·IDEXX Laboratories, Inc.

Realized volatility (21d)

21.7% 34th pct

Below its peak

-32.1%

vs 200-day average

-10.7%

Up days (1y)

49%

IDEXX Laboratories, Inc. is currently running 21.7% annualised volatility over the last 21 sessions. Measured against IDXX's own 13 years of daily returns rather than a market-wide average, that is the 34th percentile — on the quiet side for this stock, against a typical reading of 26.3%. 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.

IDXX is trading -32.1% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -24.2%, and the deepest was -48.6% in 2022. 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 -10.7% from its 200-day moving average. Against every other day in its history, that gap ranks at the 13th percentile — a narrower gap than it typically runs. Over the past year IDXX closed higher on 49% of sessions, and it is currently 1 session into a falling streak.

On October specifically: over 13 years of records, IDXX finished the month higher 8 of 13 times, with a median return of +2.6% and an average of +0.4%. Its strongest month historically has been July at +5.8% 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: IDXX has opened more than 2% away from the prior close in 118 of 3,267 sessions (3.6% of the time), with the largest gaps running +5.4% and -9.5%. 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, IDXX moved an average of 1.8% in the session after earnings, closing higher 1 of those 3 times, with a median move of -0.9% and a largest of +3.2%.

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