PPG vs SLGN: Correlation
PPG Industries (PPG) and Silgan Holdings Inc. (SLGN) show a strong relationship: their 3-year correlation of weekly returns is 0.62.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PPG and SLGN?
On 3 years of weekly data the PPG/SLGN correlation comes out at 0.62, strong. The relationship has been stable: the 1-year correlation (0.71) sits close to the 3-year figure. The 5-year figure is 0.59, and annualized covariance runs at 466.5 %².
Among the 67 assets we track against PPG, SLGN ranks #19 by 3-year correlation. On 12-month performance PPG holds a 11.7-point edge, +3.8% against -7.9%.
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 SLGN: side by side
| PPG (PPG Industries) | SLGN (Silgan Holdings Inc.) | |
|---|---|---|
| 1-year return | +3.8% | -7.9% |
| 5-year return | -22.0% | +5.9% |
| Volatility (ann.) | 25.5% | 29.4% |
| Beta vs S&P 500 | 0.90 | 0.58 |
| Max drawdown (3Y) | -37.4% | -35.0% |
| Market cap | $25.2B | $4.4B |
| P/E (trailing) | 16.4 | 16.9 |
| Dividend yield | 2.48% | 1.91% |
| Sector / category | Materials | US Listed |
Year-by-year returns
| Year | PPG | SLGN |
|---|---|---|
| 2022 | -25.7% | +22.7% |
| 2023 | +21.2% | -11.3% |
| 2024 | -18.5% | +16.8% |
| 2025 | -12.0% | -21.1% |
| 2026 | +12.8% | +4.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PPG and SLGN good diversifiers for each other?
To a limited degree. At 0.62 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 SLGN?
The PPG/SLGN correlation stands at 0.62 on a 3-year window (1 year: 0.71, 5 years: 0.59), computed from weekly returns as of 2026-08-27.
Is SLGN a good diversifier for PPG?
To a limited degree. At 0.62 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 0.62 mean?
On the −1 to +1 scale, 0.62 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-slgn.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ppg-vs-slgn/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: PPG correlations · SLGN correlations
