BSY·Bentley Systems Incorporated Class B

Realized volatility (21d)

39.9% 65th pct

Below its peak

-51.9%

vs 200-day average

+2.0%

Up days (1y)

44%

Bentley Systems Incorporated Class B is currently running 39.9% annualised volatility over the last 21 sessions. Measured against BSY's own 6 years of daily returns rather than a market-wide average, that is the 65th percentile — a little above its own norm, against a typical reading of 34.8%. 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.

BSY is trading -51.9% below its running peak. Across 5 full years on file, its median worst-drawdown-in-a-year was -35.0%, and the deepest was -42.9% in 2022. 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 +2.0% from its 200-day moving average. Against every other day in its history, that gap ranks at the 60th percentile — a somewhat wider gap than its own norm. Over the past year BSY closed higher on 44% of sessions, and it is currently 1 session into a rising streak.

On October specifically: over 7 years of records, BSY finished the month higher 3 of 7 times, with a median return of -2.6% and an average of +1.8%. Its strongest month historically has been July at +6.4% on average, its weakest September at -5.7%. 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: BSY has opened more than 2% away from the prior close in 133 of 1,521 sessions (8.7% of the time), with the largest gaps running +10.4% and -11.5%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 1,522 daily closes between 2020-09-23 and 2026-10-14, split-adjusted, recomputed daily. Percentiles are against BSY's own 6-year history, not a peer group or index.