BNTX·BioNTech SE

Realized volatility (21d)

44.1% 36th pct

Below its peak

-79.7%

vs 200-day average

-8.2%

Up days (1y)

49%

BioNTech SE is currently running 44.1% annualised volatility over the last 21 sessions. Measured against BNTX's own 7 years of daily returns rather than a market-wide average, that is the 36th percentile — on the quiet side for this stock, against a typical reading of 52.4%. 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.

BNTX is trading -79.7% below its running peak. Across 6 full years on file, its median worst-drawdown-in-a-year was -43.1%, and the deepest was -50.1% in 2021. 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 -8.2% from its 200-day moving average. Against every other day in its history, that gap ranks at the 39th percentile — close to the gap it normally carries. Over the past year BNTX closed higher on 49% of sessions, and it is currently 1 session into a rising streak.

On October specifically: over 8 years of records, BNTX finished the month higher 5 of 8 times, with a median return of +1.2% and an average of +3.0%. Its strongest month historically has been November at +19.1% on average, its weakest February at -4.0%. 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: BNTX has opened more than 2% away from the prior close in 243 of 1,758 sessions (13.8% of the time), with the largest gaps running +55.7% and -10.8%. 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, BNTX moved an average of 2.5% in the session after earnings, closing higher 3 of those 3 times, with a median move of +0.9% and a largest of +6.6%.

All figures computed from 1,760 daily closes between 2019-10-10 and 2026-10-14, split-adjusted, recomputed daily. Percentiles are against BNTX's own 7-year history, not a peer group or index.