BLK·BlackRock, Inc.

Realized volatility (21d)

18.8% 36th pct

Below its peak

-10.7%

vs 200-day average

+1.3%

Up days (1y)

47%

BlackRock, Inc. is currently running 18.8% annualised volatility over the last 21 sessions. Measured against BLK's own 13 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 21.5%. 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.

BLK is trading -10.7% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -19.4%, and the deepest was -43.0% in 2022. 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 +1.3% from its 200-day moving average. Against every other day in its history, that gap ranks at the 33rd percentile — close to the gap it normally carries. Over the past year BLK closed higher on 47% of sessions, and it is currently 1 session into a rising streak.

On October specifically: over 14 years of records, BLK finished the month higher 10 of 14 times, with a median return of +5.1% and an average of +3.5%. Its strongest month historically has been November at +5.9% on average, its weakest September at -2.0%. 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: BLK has opened more than 2% away from the prior close in 137 of 3,268 sessions (4.2% of the time), with the largest gaps running +7.6% and -8.6%. 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, BLK moved an average of 0.5% in the session after earnings, closing higher 1 of those 3 times, with a median move of -0.2% and a largest of -0.7%.

All figures computed from 3,269 daily closes between 2013-10-15 and 2026-10-14, split-adjusted, recomputed daily. Percentiles are against BLK's own 13-year history, not a peer group or index.