BBIO·BridgeBio Pharma Inc.

Realized volatility (21d)

43.8% 25th pct

Below its peak

-29.9%

vs 200-day average

-13.7%

Up days (1y)

51%

BridgeBio Pharma Inc. is currently running 43.8% annualised volatility over the last 21 sessions. Measured against BBIO's own 7 years of daily returns rather than a market-wide average, that is the 25th percentile — unusually subdued by its own history, against a typical reading of 57.6%. 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.

BBIO is trading -29.9% below its running peak. Across 6 full years on file, its median worst-drawdown-in-a-year was -50.4%, and the deepest was -80.1% in 2021. 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 -13.7% from its 200-day moving average. Against every other day in its history, that gap ranks at the 21st percentile — a narrower gap than it typically runs. Over the past year BBIO closed higher on 51% of sessions, and it is currently 1 session into a falling streak.

On October specifically: over 7 years of records, BBIO finished the month higher 5 of 7 times, with a median return of +2.5% and an average of +3.7%. Its strongest month historically has been June at +12.7% on average, its weakest September at -5.5%. 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: BBIO has opened more than 2% away from the prior close in 332 of 1,829 sessions (18.2% of the time), with the largest gaps running +20.9% and -12.2%. For anyone holding through an event, that rate is a better guide to overnight exposure than the intraday range.

All figures computed from 1,831 daily closes between 2019-06-27 and 2026-10-13, split-adjusted, recomputed daily. Percentiles are against BBIO's own 7-year history, not a peer group or index.