DAL·Delta Air Lines, Inc.

Realized volatility (21d)

25.3% 28th pct

Below its peak

-11.2%

vs 200-day average

+9.5%

Up days (1y)

47%

Delta Air Lines, Inc. is currently running 25.3% annualised volatility over the last 21 sessions. Measured against DAL's own 13 years of daily returns rather than a market-wide average, that is the 28th percentile — on the quiet side for this stock, against a typical reading of 31.1%. 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.

DAL is trading -11.2% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -32.0%, and the deepest was -69.0% 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 +9.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 68th percentile — a somewhat wider gap than its own norm. Over the past year DAL closed higher on 47% of sessions, and it is currently 2 sessions into a falling streak.

On October specifically: over 13 years of records, DAL finished the month higher 8 of 13 times, with a median return of +4.1% and an average of +3.3%. Its strongest month historically has been November at +8.8% on average, its weakest March at -3.8%. 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: DAL has opened more than 2% away from the prior close in 116 of 3,265 sessions (3.6% of the time), with the largest gaps running +9.9% and -9.5%. 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, DAL moved an average of 1.0% in the session after earnings, closing higher 0 of those 3 times, with a median move of -1.3% and a largest of -1.3%.

All figures computed from 3,266 daily closes between 2013-10-07 and 2026-10-05, split-adjusted, recomputed daily. Percentiles are against DAL's own 13-year history, not a peer group or index.