The takeaway
Greenbrier Companies Inc shows a pronounced seasonal pattern over 10 years of data — strongest in June (+5.2%) and softest in March (−3.3%).
Right now
In July, the stock has risen 50% of years, averaging +2.4% — essentially in line with the S&P 500.
The full picture
Greenbrier Companies Inc's most dependable month has been June, higher in 7 of 10 years; March has been its least reliable, up just 20% of the time.
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Month by month
The stock's clearest edge over the S&P 500 lands in June (+5.0 pts); it has trailed the market most in April (−5.4 pts).
“vs S&P” is Greenbrier Companies Inc’s average for a month minus the S&P 500’s average for that same month — isolating Greenbrier Companies Inc’s own seasonal edge from broad market drift.
Reality check
Over the last 5 years, June has closed higher 40% of the time versus 70% across the last 10 years — the pattern is weakening.
Figures are the typical (median) June 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
Strip the year back and a single month does the heavy lifting: June, up in 7 of 10 Junes while the other eleven tend to blur together.
The headline flatters a touch — its +5.2% average sits well above the +2.5% a typical year delivers, the work of a few big Junes. That reliability comes with real swings, mind — even June ranges by 17.8% 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 +5.0 points above the index. That consistency sets it apart from the field, where the average stock manages June only about 52% of the time.
A few other months pull their weight: May, September, and November have also closed higher more often than not. On the other side of the ledger, March has been the soft spot — the weakest of 5 months that average a loss (−3.3%), and the edge isn't year-round — the stock has trailed the S&P 500 in April, March, and January. Its roughest month on record was a −26.0% March in 2020 — a reminder of how hard even a seasonal name can fall.
The pattern has softened of late, June's last five years slipping below its longer-run record.
The takeaway is less about when to buy than what to expect: June aside, the stock's months offer little reliable tilt.
Short answers on the stock's best month (June), its worst (March), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2016 its best month (June, +5.2%) has run well ahead of its worst (March, −3.3%) — the heatmap above shows how steady that gap has been year to year.
June has been the strongest, averaging +5.2% and closing higher in 7 of 10 years since 2016.
It's the weakest, averaging −3.3% — 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