ATMU vs PH: Correlation
How closely do Atmus Filtration Technologies Inc. (ATMU) and Parker Hannifin (PH) trade together? Their weekly returns over three years give a correlation of 0.65, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATMU and PH?
On 3 years of weekly data the ATMU/PH correlation comes out at 0.65, strong. Recent behaviour matches the longer record: 0.69 over 1 year against 0.65 over 3. The 5-year figure is n/a, and annualized covariance runs at 562.6 %².
In ATMU's tracked universe of 12 assets, PH sits right near the top at #3. Their recent paths diverged sharply: over the last 12 months PH outperformed by 22.9 percentage points (+9.9% for ATMU against +32.8% for PH).
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ATMU vs PH: side by side
| ATMU (Atmus Filtration Technologies Inc.) | PH (Parker Hannifin) | |
|---|---|---|
| 1-year return | +9.9% | +32.8% |
| 5-year return | n/a | +256.4% |
| Volatility (ann.) | 32.4% | 26.6% |
| Beta vs S&P 500 | 1.02 | 1.16 |
| Max drawdown (3Y) | -30.2% | -26.8% |
| Market cap | $4.0B | $127.5B |
| P/E (trailing) | 19.0 | 36.5 |
| Dividend yield | 0.45% | 0.71% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | ATMU | PH |
|---|---|---|
| 2022 | – | -6.9% |
| 2023 | – | +60.8% |
| 2024 | +67.3% | +39.6% |
| 2025 | +33.2% | +39.5% |
| 2026 | -5.8% | +15.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATMU and PH good diversifiers for each other?
To a limited degree. At 0.65 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ATMU and PH?
Using weekly returns as of 2026-08-27: 0.65 over 3 years, with 0.69 over the last year and n/a over 5 years.
Is PH a good diversifier for ATMU?
To a limited degree. At 0.65 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.65 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/atmu-vs-ph.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/atmu-vs-ph/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ATMU correlations · PH correlations
