BDX·Becton, Dickinson and Company

Realized volatility (21d)

23.2% 71st pct

Below its peak

-18.2%

vs 200-day average

+15.1%

Up days (1y)

48%

Becton, Dickinson and Company is currently running 23.2% annualised volatility over the last 21 sessions. Measured against BDX's own 13 years of daily returns rather than a market-wide average, that is the 71st percentile — a little above its own norm, against a typical reading of 18.8%. 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.

BDX is trading -18.2% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -16.9%, and the deepest was -34.0% in 2025. 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 +15.1% from its 200-day moving average. Against every other day in its history, that gap ranks at the 97th percentile — a wider gap than this stock usually carries. Over the past year BDX closed higher on 48% of sessions, and it is currently 3 sessions into a rising streak.

On September specifically: over 14 years of records, BDX finished the month higher 2 of 14 times, with a median return of -1.2% and an average of -2.2%. Its strongest month historically has been July at +4.0% on average, its weakest September at -2.2%. 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: BDX has opened more than 2% away from the prior close in 72 of 3,268 sessions (2.2% of the time), with the largest gaps running +35.8% and -8.9%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

Across the last 4 dated reports on file, BDX moved an average of 1.9% in the session after earnings, closing higher 2 of those 4 times, with a median move of -0.3% and a largest of -3.6%.

All figures computed from 3,269 daily closes between 2013-09-16 and 2026-09-15, split-adjusted, recomputed daily. Percentiles are against BDX's own 13-year history, not a peer group or index.