GILD·Gilead Sciences, Inc.

Realized volatility (21d)

18.9% 26th pct

Below its peak

-7.4%

vs 200-day average

+5.5%

Up days (1y)

48%

Gilead Sciences, Inc. is currently running 18.9% annualised volatility over the last 21 sessions. Measured against GILD's own 13 years of daily returns rather than a market-wide average, that is the 26th percentile — on the quiet side for this stock, against a typical reading of 22.6%. 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.

GILD is trading -7.4% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -21.4%, and the deepest was -36.5% in 2020. 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 +5.5% from its 200-day moving average. Against every other day in its history, that gap ranks at the 65th percentile — a somewhat wider gap than its own norm. Over the past year GILD closed higher on 48% of sessions, and it is currently 6 sessions into a falling streak.

On October specifically: over 13 years of records, GILD finished the month higher 8 of 13 times, with a median return of +5.3% and an average of +2.6%. Its strongest month historically has been January at +3.3% on average, its weakest December at -2.4%. 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: GILD has opened more than 2% away from the prior close in 30 of 3,268 sessions (0.9% of the time), with the largest gaps running +3.3% and -5.6%. 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, GILD moved an average of 3.1% in the session after earnings, closing higher 1 of those 3 times, with a median move of -0.7% and a largest of +7.2%.

All figures computed from 3,269 daily closes between 2013-10-07 and 2026-10-06, split-adjusted, recomputed daily. Percentiles are against GILD's own 13-year history, not a peer group or index.