BBY·Best Buy Co., Inc.

Realized volatility (21d)

31.5% 53rd pct

Below its peak

-37.1%

vs 200-day average

+19.8%

Up days (1y)

47%

Best Buy Co., Inc. is currently running 31.5% annualised volatility over the last 21 sessions. Measured against BBY's own 13 years of daily returns rather than a market-wide average, that is the 53rd percentile — close to its own typical level, against a typical reading of 30.6%. 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.

BBY is trading -37.1% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -30.9%, and the deepest was -44.0% in 2014. 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 +19.8% from its 200-day moving average. Against every other day in its history, that gap ranks at the 85th percentile — a wider gap than this stock usually carries. Over the past year BBY closed higher on 47% of sessions, and it is currently 1 session into a falling streak.

On October specifically: over 13 years of records, BBY finished the month higher 7 of 13 times, with a median return of +1.8% and an average of +1.7%. Its strongest month historically has been August at +4.0% on average, its weakest January at -2.8%. 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: BBY has opened more than 2% away from the prior close in 119 of 3,267 sessions (3.6% of the time), with the largest gaps running +6.5% and -8.8%. 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, BBY moved an average of 1.7% in the session after earnings, closing higher 2 of those 3 times, with a median move of +0.6% and a largest of -2.4%.

All figures computed from 3,268 daily closes between 2013-10-07 and 2026-10-05, split-adjusted, recomputed daily. Percentiles are against BBY's own 13-year history, not a peer group or index.