ISRG·Intuitive Surgical, Inc.

Realized volatility (21d)

26.0% 50th pct

Below its peak

-31.4%

vs 200-day average

-4.9%

Up days (1y)

48%

Intuitive Surgical, Inc. is currently running 26.0% annualised volatility over the last 21 sessions. Measured against ISRG's own 13 years of daily returns rather than a market-wide average, that is the 50th percentile — close to its own typical level, against a typical reading of 25.9%. 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.

ISRG is trading -31.4% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -23.2%, and the deepest was -49.1% 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 -4.9% from its 200-day moving average. Against every other day in its history, that gap ranks at the 17th percentile — a narrower gap than it typically runs. Over the past year ISRG closed higher on 48% of sessions, and it is currently 2 sessions into a falling streak.

On October specifically: over 14 years of records, ISRG finished the month higher 9 of 14 times, with a median return of +4.5% and an average of +3.8%. Its strongest month historically has been November at +4.3% on average, its weakest March at -1.0%. 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: ISRG has opened more than 2% away from the prior close in 84 of 3,268 sessions (2.6% of the time), with the largest gaps running +5.4% and -9.2%. 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, ISRG moved an average of 4.6% in the session after earnings, closing higher 1 of those 3 times, with a median move of -2.8% and a largest of +7.1%.

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