DTE·DTE Energy Company

Realized volatility (21d)

19.1% 64th pct

Below its peak

-17.8%

vs 200-day average

-9.9%

Up days (1y)

51%

DTE Energy Company is currently running 19.1% annualised volatility over the last 21 sessions. Measured against DTE's own 13 years of daily returns rather than a market-wide average, that is the 64th percentile — a little above its own norm, against a typical reading of 16.8%. 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.

DTE is trading -17.8% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -11.2%, 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 -9.9% from its 200-day moving average. Against every other day in its history, that gap ranks at the 5th percentile — a narrower gap than it typically runs. Over the past year DTE closed higher on 51% of sessions, and it is currently 3 sessions into a falling streak.

On October specifically: over 13 years of records, DTE finished the month higher 9 of 13 times, with a median return of +2.8% and an average of +1.7%. Its strongest month historically has been April at +2.4% on average, its weakest September at -2.2%. 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: DTE has opened more than 2% away from the prior close in 57 of 3,266 sessions (1.7% of the time), with the largest gaps running +4.8% and -8.4%. 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, DTE moved an average of 1.7% in the session after earnings, closing higher 0 of those 3 times, with a median move of -1.8% and a largest of -1.9%.

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