WCC·WESCO International, Inc.

Realized volatility (21d)

41.6% 73rd pct

Below its peak

-8.2%

vs 200-day average

+9.8%

Up days (1y)

53%

WESCO International, Inc. is currently running 41.6% annualised volatility over the last 21 sessions. Measured against WCC's own 13 years of daily returns rather than a market-wide average, that is the 73rd percentile — a little above its own norm, against a typical reading of 32.2%. 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.

WCC is trading -8.2% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -31.5%, and the deepest was -73.7% 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 +9.8% from its 200-day moving average. Against every other day in its history, that gap ranks at the 64th percentile — a somewhat wider gap than its own norm. Over the past year WCC closed higher on 53% of sessions, and it is currently 3 sessions into a rising streak.

On September specifically: over 13 years of records, WCC finished the month higher 5 of 13 times, with a median return of -1.3% and an average of -1.4%. Its strongest month historically has been November at +7.1% on average, its weakest March at -2.0%. 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: WCC has opened more than 2% away from the prior close in 283 of 3,266 sessions (8.7% of the time), with the largest gaps running +14.8% and -16.4%. 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, WCC moved an average of 2.4% in the session after earnings, closing higher 2 of those 3 times, with a median move of +0.9% and a largest of +6.0%.

All figures computed from 3,267 daily closes between 2013-09-23 and 2026-09-18, split-adjusted, recomputed daily. Percentiles are against WCC's own 13-year history, not a peer group or index.