EIX·Edison International

Realized volatility (21d)

20.9% 54th pct

Below its peak

-37.0%

vs 200-day average

-18.2%

Up days (1y)

54%

Edison International is currently running 20.9% annualised volatility over the last 21 sessions. Measured against EIX's own 13 years of daily returns rather than a market-wide average, that is the 54th percentile — close to its own typical level, against a typical reading of 20.3%. 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.

EIX is trading -37.0% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -19.2%, and the deepest was -43.1% in 2020. 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 -18.2% from its 200-day moving average. Against every other day in its history, that gap ranks at the 8th percentile — a narrower gap than it typically runs. Over the past year EIX closed higher on 54% of sessions, and it is currently 1 session into a rising streak.

On October specifically: over 14 years of records, EIX finished the month higher 10 of 14 times, with a median return of +3.2% and an average of +2.3%. Its strongest month historically has been March at +2.7% on average, its weakest September 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: EIX has opened more than 2% away from the prior close in 77 of 3,268 sessions (2.4% of the time), with the largest gaps running +5.9% and -7.0%. 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, EIX moved an average of 3.0% in the session after earnings, closing higher 2 of those 3 times, with a median move of +0.2% and a largest of -6.5%.

All figures computed from 3,269 daily closes between 2013-10-16 and 2026-10-15, split-adjusted, recomputed daily. Percentiles are against EIX's own 13-year history, not a peer group or index.