GGG vs PH: Correlation
How closely do Graco Inc. (GGG) and Parker Hannifin (PH) trade together? Their weekly returns over three years give a correlation of 0.67, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GGG and PH?
Over the past 3 years, GGG and PH moved with a correlation of 0.67, which is strong. The relationship has been stable: the 1-year correlation (0.67) sits close to the 3-year figure. Over 5 years the correlation is 0.69, and the annualized covariance of weekly returns is 337.4 %².
Among the 26 assets we track against GGG, PH ranks #7 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months PH outperformed by 40.0 percentage points (-7.2% for GGG 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.
GGG vs PH: side by side
| GGG (Graco Inc.) | PH (Parker Hannifin) | |
|---|---|---|
| 1-year return | -7.2% | +32.8% |
| 5-year return | +7.7% | +256.4% |
| Volatility (ann.) | 19.0% | 26.6% |
| Beta vs S&P 500 | 0.70 | 1.16 |
| Max drawdown (3Y) | -22.6% | -26.8% |
| Market cap | $12.9B | $127.5B |
| P/E (trailing) | 25.0 | 36.5 |
| Dividend yield | 1.46% | 0.71% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | GGG | PH |
|---|---|---|
| 2022 | -15.5% | -6.9% |
| 2023 | +30.6% | +60.8% |
| 2024 | -1.7% | +39.6% |
| 2025 | -1.5% | +39.5% |
| 2026 | -1.8% | +15.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GGG and PH good diversifiers for each other?
Only partially. A correlation of 0.67 means GGG and PH share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between GGG and PH?
Using weekly returns as of 2026-08-27: 0.67 over 3 years, with 0.67 over the last year and 0.69 over 5 years.
Is PH a good diversifier for GGG?
Only partially. A correlation of 0.67 means GGG and PH share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.67 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/ggg-vs-ph.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ggg-vs-ph/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: GGG correlations · PH correlations
