AEIS·Advanced Energy Industries Inc.

Realized volatility (21d)

38.7% 57th pct

Below its peak

-29.3%

vs 200-day average

-10.5%

Up days (1y)

53%

Advanced Energy Industries Inc. is currently running 38.7% annualised volatility over the last 21 sessions. Measured against AEIS's own 13 years of daily returns rather than a market-wide average, that is the 57th percentile — close to its own typical level, against a typical reading of 36.2%. 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.

AEIS is trading -29.3% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -30.6%, and the deepest was -54.4% 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 -10.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 16th percentile — a narrower gap than it typically runs. Over the past year AEIS closed higher on 53% of sessions, and it is currently 2 sessions into a falling streak.

On October specifically: over 13 years of records, AEIS finished the month higher 10 of 13 times, with a median return of +5.3% and an average of +2.3%. Its strongest month historically has been November at +7.9% on average, its weakest March at -2.8%. 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: AEIS has opened more than 2% away from the prior close in 295 of 3,267 sessions (9.0% of the time), with the largest gaps running +15.7% and -10.7%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

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