CSTM vs KALU: Correlation
Constellium SE (CSTM) and Kaiser Aluminum Corporation (KALU) show a strong relationship: their 3-year correlation of weekly returns is 0.67.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CSTM and KALU?
Across a 3-year window, the weekly returns of CSTM and KALU correlate at 0.67, strong. The relationship has been stable: the 1-year correlation (0.71) sits close to the 3-year figure. Stretching to 5 years gives 0.67, with an annualized covariance of 1279.1 %².
In CSTM's tracked universe of 11 assets, KALU sits right near the top at #1. The last year tells two different stories: KALU led by 16.1 percentage points, +87.7% for CSTM against +103.8% for KALU.
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.
CSTM vs KALU: side by side
| CSTM (Constellium SE) | KALU (Kaiser Aluminum Corporation) | |
|---|---|---|
| 1-year return | +87.7% | +103.8% |
| 5-year return | +38.2% | +51.7% |
| Volatility (ann.) | 41.2% | 46.6% |
| Beta vs S&P 500 | 1.25 | 1.72 |
| Max drawdown (3Y) | -66.3% | -48.9% |
| Market cap | $3.7B | $2.6B |
| P/E (trailing) | 7.0 | 11.6 |
| Dividend yield | 0.00% | 1.98% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CSTM | KALU |
|---|---|---|
| 2022 | -33.9% | -16.2% |
| 2023 | +68.7% | -2.1% |
| 2024 | -48.5% | +2.7% |
| 2025 | +83.5% | +70.1% |
| 2026 | +45.4% | +38.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CSTM and KALU good diversifiers for each other?
To a limited degree. At 0.67 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 CSTM and KALU?
The CSTM/KALU correlation stands at 0.67 on a 3-year window (1 year: 0.71, 5 years: 0.67), computed from weekly returns as of 2026-08-27.
Is KALU a good diversifier for CSTM?
To a limited degree. At 0.67 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 0.67 mean?
A reading of 0.67 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/cstm-vs-kalu.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/cstm-vs-kalu/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CSTM correlations · KALU correlations
