The takeaway
Parsons Corp shows a moderate seasonal pattern over 7 years of data — strongest in June (+4.8%) and softest in September (−0.6%).
Right now
In July, the stock has risen 71% of years, averaging +2.8%, about +0.6 pts better than the S&P 500.
The full picture
Parsons Corp's most dependable month has been June, higher in 6 of 7 years; September has been its least reliable, up just 29% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | ||||||||||||
| Median return % | ||||||||||||
| 2025 | ||||||||||||
| 2024 | ||||||||||||
| 2023 | ||||||||||||
| 2022 | ||||||||||||
| 2021 | ||||||||||||
| 2020 | ||||||||||||
| 2019 | — | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in June (+4.6 pts); it has trailed the market most in December (−4.3 pts).
“vs S&P” is Parsons Corp’s average for a month minus the S&P 500’s average for that same month — isolating Parsons Corp’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, June has closed higher 100% of the time versus 86% across the last 7 years — the pattern is strengthening.
Figures are the typical (median) June return and how often it rose — the last 5 years versus the last 7(the heatmap’s default window). This verdict stays anchored to that 7-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. June stands out, higher in 6 of 7 Junes, but it heads a clutch of months that pull the year reliably upward.
Its average (+4.8%) and median (+7.1%) land within a hair of each other — the tell of steady, year-after-year gains rather than one outlier doing the work. That reliability comes with real swings, mind — even June ranges by 8.6% from year to year, so any single year can land far from the average. Crucially, the gain is the stock's own rather than a rising tide's: June has cleared the S&P 500 by +4.6 points above the index. That consistency sets it apart from the field, where the average stock manages June only about 52% of the time.
The strength clusters rather than stands alone — May–July forms a firm stretch that carries much of the year. On the other side of the ledger, September has been the soft spot — the weakest of 3 months that average a loss (−0.6%), and the edge isn't year-round — the stock has trailed the S&P 500 in December, January, and November. Its roughest month on record was a −25.3% December in 2025 — a reminder of how hard even a seasonal name can fall.
June has now closed higher 5 years running. If anything it has sharpened recently — the last five Junes run ahead of the earlier years.
The takeaway is less about when to buy than what to expect: June aside, the stock's months offer little reliable tilt. With a short 7-year record, the signal is best held loosely.
Short answers on the stock's best month (June), its worst (September), and whether it really trades seasonally.
Yes, to a moderate degree. Since 2019 its best month (June, +4.8%) has run well ahead of its worst (September, −0.6%) — the heatmap above shows how steady that gap has been year to year.
June has been the strongest, averaging +4.8% and closing higher in 6 of 7 years since 2019.
It's the weakest, averaging −0.6% — historically a soft spot, though it still varies from year to year.
Explore
These names have the strongest July track records on record — a starting point for comparison.
Before you trade