ALG vs KOP: Correlation
Alamo Group, Inc. (ALG) and Koppers Holdings Inc. (KOP) show a moderate relationship: their 3-year correlation of weekly returns is 0.54.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ALG and KOP?
Over the past 3 years, ALG and KOP moved with a correlation of 0.54, which is moderate. Little has changed lately, as the 1-year reading of 0.46 lands near the 3-year figure. Over 5 years the correlation is 0.55, and the annualized covariance of weekly returns is 555.5 %².
By 3-year correlation, KOP places #8 of the 17 assets tracked against ALG. Their recent paths diverged sharply: over the last 12 months KOP outperformed by 84.1 percentage points (-24.0% for ALG against +60.1% for KOP).
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.
ALG vs KOP: side by side
| ALG (Alamo Group, Inc.) | KOP (Koppers Holdings Inc.) | |
|---|---|---|
| 1-year return | -24.0% | +60.1% |
| 5-year return | +9.2% | +47.0% |
| Volatility (ann.) | 30.3% | 33.9% |
| Beta vs S&P 500 | 0.83 | 0.89 |
| Max drawdown (3Y) | -36.3% | -58.4% |
| Market cap | $2.0B | $0.9B |
| P/E (trailing) | 19.8 | – |
| Dividend yield | 0.78% | 0.73% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ALG | KOP |
|---|---|---|
| 2022 | -3.3% | -9.2% |
| 2023 | +49.2% | +82.8% |
| 2024 | -11.1% | -36.3% |
| 2025 | -9.1% | -15.5% |
| 2026 | -1.7% | +71.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ALG and KOP good diversifiers for each other?
Only partially. A correlation of 0.54 means ALG and KOP 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 ALG and KOP?
The ALG/KOP correlation stands at 0.54 on a 3-year window (1 year: 0.46, 5 years: 0.55), computed from weekly returns as of 2026-08-27.
Is KOP a good diversifier for ALG?
Only partially. A correlation of 0.54 means ALG and KOP share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.54 mean?
A reading of 0.54 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/alg-vs-kop.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/alg-vs-kop/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ALG correlations · KOP correlations
