AEP·American Electric Power Company, Inc.

Realized volatility (21d)

13.0% 18th pct

Below its peak

-11.2%

vs 200-day average

-3.5%

Up days (1y)

47%

American Electric Power Company, Inc. is currently running 13.0% annualised volatility over the last 21 sessions. Measured against AEP's own 13 years of daily returns rather than a market-wide average, that is the 18th percentile — unusually subdued by its own history, against a typical reading of 17.6%. 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.

AEP is trading -11.2% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -13.3%, and the deepest was -32.9% 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 -3.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 20th percentile — a narrower gap than it typically runs. Over the past year AEP closed higher on 47% of sessions, and it is currently 5 sessions into a rising streak.

On October specifically: over 13 years of records, AEP finished the month higher 11 of 13 times, with a median return of +4.1% and an average of +4.0%. Its strongest month historically has been October at +4.0% on average, its weakest September at -1.9%. 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: AEP has opened more than 2% away from the prior close in 37 of 3,266 sessions (1.1% of the time), with the largest gaps running +5.7% and -7.8%. 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, AEP moved an average of 1.6% in the session after earnings, closing higher 1 of those 3 times, with a median move of -0.2% and a largest of -2.8%.

All figures computed from 3,267 daily closes between 2013-10-14 and 2026-10-09, split-adjusted, recomputed daily. Percentiles are against AEP's own 13-year history, not a peer group or index.