CBOE·Cboe Global Markets, Inc.

Realized volatility (21d)

37.2% 93rd pct

Below its peak

-25.9%

vs 200-day average

-4.7%

Up days (1y)

53%

Cboe Global Markets, Inc. is currently running 37.2% annualised volatility over the last 21 sessions. Measured against CBOE's own 13 years of daily returns rather than a market-wide average, that is the 93rd percentile — an extreme by its own standards, against a typical reading of 20.7%. 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.

CBOE is trading -25.9% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -13.9%, and the deepest was -40.2% 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 -4.7% from its 200-day moving average. Against every other day in its history, that gap ranks at the 15th percentile — a narrower gap than it typically runs. Over the past year CBOE closed higher on 53% of sessions, and it is currently 1 session into a rising streak.

On September specifically: over 13 years of records, CBOE finished the month higher 5 of 13 times, with a median return of -2.5% and an average of -1.2%. Its strongest month historically has been November at +4.0% on average, its weakest March at -1.8%. 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: CBOE has opened more than 2% away from the prior close in 78 of 3,268 sessions (2.4% of the time), with the largest gaps running +8.6% and -7.9%. 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, CBOE moved an average of 3.3% in the session after earnings, closing higher 2 of those 3 times, with a median move of +2.9% and a largest of -3.9%.

All figures computed from 3,269 daily closes between 2013-09-19 and 2026-09-18, split-adjusted, recomputed daily. Percentiles are against CBOE's own 13-year history, not a peer group or index.