The takeaway
Ametek Inc shows a moderate seasonal pattern over 10 years of data — strongest in November (+6.4%) and softest in June (+0.4%).
Right now
In July, the stock has risen 80% of years, averaging +3.3%, about +1.1 pts better than the S&P 500.
The full picture
Ametek Inc's most dependable month has been November, higher in 9 of 10 years; June has been its least reliable, up just 40% of the time.
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Month by month
The stock's clearest edge over the S&P 500 lands in November (+4.1 pts); it has trailed the market most in March (−1.5 pts).
“vs S&P” is Ametek Inc’s average for a month minus the S&P 500’s average for that same month — isolating Ametek Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, November has closed higher 80% of the time versus 90% across the last 10 years — the pattern is holding.
Figures are the typical (median) November return and how often it rose — the last 5 years versus the last 10(the heatmap’s default window). This verdict stays anchored to that 10-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
Dependability is the through-line here. November stands out, higher in 9 of 10 Novembers, but it heads a clutch of months that pull the year reliably upward.
Its average (+6.4%) and median (+6.7%) land within a hair of each other — the tell of steady, year-after-year gains rather than one outlier doing the work. It is among its calmest months, too, its returns swinging least from year to year (a 4.4% spread), and even its worst November in 10 years lost only 0.4% — the gentlest downside anywhere on its calendar. Crucially, the gain is the stock's own rather than a rising tide's: November has cleared the S&P 500 by +4.1 points above the index. That consistency sets it apart from the field, where the average stock manages November only about 62% of the time.
The strength clusters rather than stands alone — October–December forms a firm stretch that carries much of the year. On the other side of the ledger, June is the year's quietest corner, essentially flat on average, and the edge isn't year-round — the stock has trailed the S&P 500 in March, December, and April. Its roughest month on record was a −19.8% March in 2020 — a reminder of how hard even a seasonal name can fall.
A long streak recently broke — November had risen 9 years straight before a −0.4% reading in 2025. Reassuringly, the tendency has held its shape: the recent five years still track the years behind them.
The takeaway is less about when to buy than what to expect: November aside, the stock's months offer little reliable tilt.
Short answers on the stock's best month (November), its worst (June), and whether it really trades seasonally.
Yes, to a moderate degree. Since 2016 its best month (November, +6.4%) has run well ahead of its worst (June, +0.4%) — the heatmap above shows how steady that gap has been year to year.
November has been the strongest, averaging +6.4% and closing higher in 9 of 10 years since 2016.
It's the weakest month, but it has still averaged a small gain (+0.4%) — quiet rather than genuinely bad.
Explore
These names have the strongest July track records on record — a starting point for comparison.
Before you trade