AYI vs PH: Correlation
How closely do Acuity Inc. (AYI) and Parker Hannifin (PH) trade together? Their weekly returns over three years give a correlation of 0.57, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AYI and PH?
Across a 3-year window, the weekly returns of AYI and PH correlate at 0.57, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.38 versus 0.57 over 3 years. Stretching to 5 years gives 0.59, with an annualized covariance of 454.6 %².
Within AYI's tracked universe of 12 assets, PH comes in at #4 by 3-year correlation. Correlation aside, the last 12 months split them widely, with PH ahead by 30.2 points (+2.6% versus +32.8%).
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.
AYI vs PH: side by side
| AYI (Acuity Inc.) | PH (Parker Hannifin) | |
|---|---|---|
| 1-year return | +2.6% | +32.8% |
| 5-year return | +86.6% | +256.4% |
| Volatility (ann.) | 30.1% | 26.6% |
| Beta vs S&P 500 | 1.13 | 1.16 |
| Max drawdown (3Y) | -33.7% | -26.8% |
| Market cap | $10.2B | $127.5B |
| P/E (trailing) | 22.7 | 36.5 |
| Dividend yield | 0.22% | 0.71% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | AYI | PH |
|---|---|---|
| 2022 | -21.5% | -6.9% |
| 2023 | +24.1% | +60.8% |
| 2024 | +42.9% | +39.6% |
| 2025 | +23.5% | +39.5% |
| 2026 | -4.9% | +15.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AYI and PH good diversifiers for each other?
To a limited degree. At 0.57 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 AYI and PH?
The AYI/PH correlation stands at 0.57 on a 3-year window (1 year: 0.38, 5 years: 0.59), computed from weekly returns as of 2026-08-27.
Is PH a good diversifier for AYI?
To a limited degree. At 0.57 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 0.57 mean?
A reading of 0.57 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ayi-vs-ph.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ayi-vs-ph/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AYI correlations · PH correlations
