SLB·Schlumberger Limited

Realized volatility (21d)

39.4% 77th pct

Below its peak

-55.7%

vs 200-day average

+5.3%

Up days (1y)

48%

Schlumberger Limited is currently running 39.4% annualised volatility over the last 21 sessions. Measured against SLB's own 13 years of daily returns rather than a market-wide average, that is the 77th percentile — elevated for this stock, against a typical reading of 29.1%. 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.

SLB is trading -55.7% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -31.0%, and the deepest was -69.5% in 2020. 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 +5.3% from its 200-day moving average. Against every other day in its history, that gap ranks at the 69th percentile — a somewhat wider gap than its own norm. Over the past year SLB closed higher on 48% of sessions, and it is currently 1 session into a falling streak.

On September specifically: over 13 years of records, SLB finished the month higher 3 of 13 times, with a median return of -2.9% and an average of -2.3%. Its strongest month historically has been January at +4.6% on average, its weakest March at -3.5%. 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: SLB has opened more than 2% away from the prior close in 100 of 3,267 sessions (3.1% of the time), with the largest gaps running +11.0% and -8.9%. 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, SLB moved an average of 1.1% in the session after earnings, closing higher 1 of those 3 times, with a median move of -1.3% and a largest of -1.5%.

All figures computed from 3,268 daily closes between 2013-09-18 and 2026-09-16, split-adjusted, recomputed daily. Percentiles are against SLB's own 13-year history, not a peer group or index.