The takeaway
Bausch + Lomb Corp shows a pronounced seasonal pattern over 4 years of data — strongest in September (+4.5%) and softest in April (−10.0%).
Right now
In July, the stock has risen 50% of years, averaging +1.9% — essentially in line with the S&P 500.
The full picture
Bausch + Lomb Corp's most dependable month has been September, higher in 3 of 4 years; April has been its least reliable, up just 33% of the time.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Win rate % | ||||||||||||
| Median return % | ||||||||||||
| 2025 | ||||||||||||
| 2024 | ||||||||||||
| 2023 | ||||||||||||
| 2022 | — | — | — | — |
Month by month
The stock's clearest edge over the S&P 500 lands in September (+4.7 pts); it has trailed the market most in April (−11.6 pts).
“vs S&P” is Bausch + Lomb Corp’s average for a month minus the S&P 500’s average for that same month — isolating Bausch + Lomb Corp’s own seasonal edge from broad market drift.
Reality check
Over the last 4 years, September has closed higher 75% of the time versus 75% across the last 4 years — the pattern is holding.
Figures are the typical (median) September return and how often it rose — the last 4 years versus the last 4(the heatmap’s default window). This verdict stays anchored to that 4-year window even if you zoom the chart, so it never disagrees with the badges above.
In plain English
The seasonal story is really one month's story — September. It has closed higher in 3 of 4 Septembers, a concentration the rest of the calendar can't touch.
Read it with one caveat: the average (+4.5%) runs well ahead of the median (+2.5%), so a handful of outsized years — not steady strength — do much of the lifting. That reliability comes with real swings, mind — even September ranges by 8.8% from year to year, so any single year can land far from the average. Better still, that strength is the stock's own and not just a buoyant market — September has outpaced the S&P 500 by +4.7 points on average. It is the more striking for the company it keeps — September is a losing month for most of the market, where barely 39% of names gain ground.
It doesn't stand entirely alone — February and December have leaned firm as well, if less emphatically. On the other side of the ledger, April has been the soft spot — the weakest of 4 months that average a loss (−10.0%), and the edge isn't year-round — the stock has trailed the S&P 500 in April, January, and March. Its roughest month on record was a −18.0% April in 2025 — a reminder of how hard even a seasonal name can fall.
For a stock this dependable in September, the sharper question is the rest of the year — outside its strong stretch, the calendar gives far less to lean on. With a short 4-year record, the signal is best held loosely.
Short answers on the stock's best month (September), its worst (April), and whether it really trades seasonally.
Yes, to a pronounced degree. Since 2022 its best month (September, +4.5%) has run well ahead of its worst (April, −10.0%) — the heatmap above shows how steady that gap has been year to year.
September has been the strongest, averaging +4.5% and closing higher in 3 of 4 years since 2022.
It's the weakest, averaging −10.0% — 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