SNPS·Synopsys, Inc.

Realized volatility (21d)

51.7% 96th pct

Below its peak

-20.6%

vs 200-day average

+14.5%

Up days (1y)

48%

Synopsys, Inc. is currently running 51.7% annualised volatility over the last 21 sessions. Measured against SNPS's own 13 years of daily returns rather than a market-wide average, that is the 96th percentile — an extreme by its own standards, against a typical reading of 26.1%. 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.

SNPS is trading -20.6% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -18.8%, and the deepest was -40.4% in 2025. 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 +14.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 69th percentile — a somewhat wider gap than its own norm. Over the past year SNPS closed higher on 48% of sessions, and it is currently 1 session into a rising streak.

On October specifically: over 13 years of records, SNPS finished the month higher 7 of 13 times, with a median return of +0.7% and an average of +0.4%. Its strongest month historically has been May at +6.0% on average, its weakest September at -2.7%. 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: SNPS has opened more than 2% away from the prior close in 127 of 3,266 sessions (3.9% of the time), with the largest gaps running +9.0% and -9.0%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 3,267 daily closes between 2013-10-14 and 2026-10-09, split-adjusted, recomputed daily. Percentiles are against SNPS's own 13-year history, not a peer group or index.