BSY·Bentley Systems Incorporated Class B

Realized volatility (21d)

50.4% 86th pct

Below its peak

-52.4%

vs 200-day average

+0.5%

Up days (1y)

43%

Bentley Systems Incorporated Class B is currently running 50.4% 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 86th percentile — elevated for this stock, against a typical reading of 34.7%. 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.

BSY is trading -52.4% 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 +0.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 56th percentile — a somewhat wider gap than its own norm. Over the past year BSY closed higher on 43% of sessions, and it is currently 1 session into a rising streak.

On October specifically: over 6 years of records, BSY finished the month higher 2 of 6 times, with a median return of -2.8% and an average of +0.9%. 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 134 of 1,514 sessions (8.9% 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 1,515 daily closes between 2020-09-23 and 2026-10-05, split-adjusted, recomputed daily. Percentiles are against BSY's own 6-year history, not a peer group or index.