GKOS·Glaukos Corporation

Realized volatility (21d)

47.4% 59th pct

Below its peak

-12.6%

vs 200-day average

+21.1%

Up days (1y)

49%

Glaukos Corporation is currently running 47.4% annualised volatility over the last 21 sessions. Measured against GKOS's own 11 years of daily returns rather than a market-wide average, that is the 59th percentile — close to its own typical level, against a typical reading of 43.6%. 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.

GKOS is trading -12.6% below its running peak. Across 10 full years on file, its median worst-drawdown-in-a-year was -43.2%, and the deepest was -63.6% 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 +21.1% from its 200-day moving average. Against every other day in its history, that gap ranks at the 63rd percentile — a somewhat wider gap than its own norm. Over the past year GKOS closed higher on 49% of sessions, and it is currently 1 session into a falling streak.

On October specifically: over 11 years of records, GKOS finished the month higher 6 of 11 times, with a median return of +2.9% and an average of -0.3%. Its strongest month historically has been June at +12.3% on average, its weakest March at -4.0%. 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: GKOS has opened more than 2% away from the prior close in 242 of 2,841 sessions (8.5% of the time), with the largest gaps running +20.6% and -21.2%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 2,842 daily closes between 2015-06-25 and 2026-10-13, split-adjusted, recomputed daily. Percentiles are against GKOS's own 11-year history, not a peer group or index.