PPG vs RPM: Correlation
How closely do PPG Industries (PPG) and RPM International Inc. (RPM) trade together? Their weekly returns over three years give a correlation of 0.73, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PPG and RPM?
On 3 years of weekly data the PPG/RPM correlation comes out at 0.73, strong. The link has tightened recently: the 1-year correlation (0.85) runs above the 3-year figure (0.73). The 5-year figure is 0.68, and annualized covariance runs at 466.4 %².
In PPG's tracked universe of 67 assets, RPM sits right near the top at #2. The last year tells two different stories: PPG led by 18.1 percentage points, +3.8% for PPG against -14.3% for RPM.
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.
PPG vs RPM: side by side
| PPG (PPG Industries) | RPM (RPM International Inc.) | |
|---|---|---|
| 1-year return | +3.8% | -14.3% |
| 5-year return | -22.0% | +38.7% |
| Volatility (ann.) | 25.5% | 25.0% |
| Beta vs S&P 500 | 0.90 | 0.85 |
| Max drawdown (3Y) | -37.4% | -32.0% |
| Market cap | $25.2B | $13.5B |
| P/E (trailing) | 16.4 | 20.7 |
| Dividend yield | 2.48% | 1.99% |
| Sector / category | Materials | US Listed |
Year-by-year returns
| Year | PPG | RPM |
|---|---|---|
| 2022 | -25.7% | -1.7% |
| 2023 | +21.2% | +16.8% |
| 2024 | -18.5% | +12.1% |
| 2025 | -12.0% | -13.9% |
| 2026 | +12.8% | +3.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PPG and RPM good diversifiers for each other?
To a limited degree. At 0.73 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 PPG and RPM?
Using weekly returns as of 2026-08-27: 0.73 over 3 years, with 0.85 over the last year and 0.68 over 5 years.
Is RPM a good diversifier for PPG?
To a limited degree. At 0.73 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 0.73 mean?
On the −1 to +1 scale, 0.73 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/ppg-vs-rpm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ppg-vs-rpm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: PPG correlations · RPM correlations
