DD vs PH: Correlation
Measured on weekly returns over the past three years, DuPont (DD) and Parker Hannifin (PH) carry a correlation of 0.51, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DD and PH?
Over the past 3 years, DD and PH moved with a correlation of 0.51, which is moderate. Recent behaviour matches the longer record: 0.55 over 1 year against 0.51 over 3. Over 5 years the correlation is 0.62, and the annualized covariance of weekly returns is 392.9 %².
Among the 34 assets we track against DD, PH ranks #18 by 3-year correlation. Over the last 12 months DD came out ahead by 11.9 percentage points (+44.7% against +32.8%). Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from 0.10 to 0.78.
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.
DD vs PH: side by side
| DD (DuPont) | PH (Parker Hannifin) | |
|---|---|---|
| 1-year return | +44.7% | +32.8% |
| 5-year return | +64.0% | +256.4% |
| Volatility (ann.) | 28.8% | 26.6% |
| Beta vs S&P 500 | 0.93 | 1.16 |
| Max drawdown (3Y) | -37.8% | -26.8% |
| Market cap | $18.7B | $127.5B |
| P/E (trailing) | 59.1 | 36.5 |
| Dividend yield | 2.20% | 0.71% |
| Sector / category | Industrials | Industrials |
Year-by-year returns
| Year | DD | PH |
|---|---|---|
| 2022 | -13.4% | -6.9% |
| 2023 | +14.4% | +60.8% |
| 2024 | +1.0% | +39.6% |
| 2025 | +28.7% | +39.5% |
| 2026 | +16.0% | +15.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DD and PH good diversifiers for each other?
To a limited degree. At 0.51 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 DD and PH?
As of 2026-08-27, the correlation of weekly returns between DD and PH is 0.51 over 3 years, 0.55 over 1 year and 0.62 over 5 years.
Is PH a good diversifier for DD?
To a limited degree. At 0.51 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 0.51 mean?
On the −1 to +1 scale, 0.51 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/dd-vs-ph.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/dd-vs-ph/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DD correlations · PH correlations
