GPC vs PPG: Correlation
How closely do Genuine Parts Company (GPC) and PPG Industries (PPG) trade together? Their weekly returns over three years give a correlation of 0.56, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GPC and PPG?
Across a 3-year window, the weekly returns of GPC and PPG correlate at 0.56, moderate. The relationship has been stable: the 1-year correlation (0.65) sits close to the 3-year figure. Stretching to 5 years gives 0.53, with an annualized covariance of 454.1 %².
Among the 36 assets we track against GPC, PPG ranks #6 by 3-year correlation. Neither side won the trailing year by much: +1.3% against +3.8%. The rolling one-year correlation moved between 0.27 and 0.65 over the past three years, a moderate range.
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.
GPC vs PPG: side by side
| GPC (Genuine Parts Company) | PPG (PPG Industries) | |
|---|---|---|
| 1-year return | +1.3% | +3.8% |
| 5-year return | +27.6% | -22.0% |
| Volatility (ann.) | 31.9% | 25.5% |
| Beta vs S&P 500 | 0.66 | 0.90 |
| Max drawdown (3Y) | -39.7% | -37.4% |
| Market cap | $18.8B | $25.2B |
| P/E (trailing) | 546.8 | 16.4 |
| Dividend yield | 3.00% | 2.48% |
| Sector / category | Consumer Discretionary | Materials |
Year-by-year returns
| Year | GPC | PPG |
|---|---|---|
| 2022 | +26.8% | -25.7% |
| 2023 | -18.1% | +21.2% |
| 2024 | -13.2% | -18.5% |
| 2025 | +8.7% | -12.0% |
| 2026 | +13.4% | +12.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GPC and PPG good diversifiers for each other?
To a limited degree. At 0.56 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 GPC and PPG?
As of 2026-08-27, the correlation of weekly returns between GPC and PPG is 0.56 over 3 years, 0.65 over 1 year and 0.53 over 5 years.
Is PPG a good diversifier for GPC?
To a limited degree. At 0.56 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 0.56 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/gpc-vs-ppg.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/gpc-vs-ppg/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: GPC correlations · PPG correlations
