TMO·Thermo Fisher Scientific Inc.

Realized volatility (21d)

24.9% 66th pct

Below its peak

-1.8%

vs 200-day average

+22.2%

Up days (1y)

50%

Thermo Fisher Scientific Inc. is currently running 24.9% annualised volatility over the last 21 sessions. Measured against TMO's own 13 years of daily returns rather than a market-wide average, that is the 66th percentile — a little above its own norm, against a typical reading of 22.2%. 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.

TMO is trading -1.8% below its running peak. Across 12 full years on file, its median worst-drawdown-in-a-year was -16.6%, and the deepest was -35.6% in 2025. 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 +22.2% from its 200-day moving average. Against every other day in its history, that gap ranks at the 95th percentile — a wider gap than this stock usually carries. Over the past year TMO closed higher on 50% of sessions, and it is currently 4 sessions into a rising streak.

On October specifically: over 14 years of records, TMO finished the month higher 8 of 14 times, with a median return of +1.6% and an average of +0.7%. Its strongest month historically has been July at +7.4% on average, its weakest February at -2.9%. 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: TMO has opened more than 2% away from the prior close in 93 of 3,268 sessions (2.8% of the time), with the largest gaps running +6.1% and -9.0%. 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, TMO moved an average of 0.7% in the session after earnings, closing higher 1 of those 3 times, with a median move of -0.5% and a largest of -1.6%.

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