ALX vs ROCK: Correlation
Alexander's, Inc. (ALX) and Gibraltar Industries, Inc. (ROCK) show a moderate relationship: their 3-year correlation of weekly returns is 0.57.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ALX and ROCK?
Across a 3-year window, the weekly returns of ALX and ROCK correlate at 0.57, moderate. The relationship has been stable: the 1-year correlation (0.55) sits close to the 3-year figure. Stretching to 5 years gives 0.48, with an annualized covariance of 594.0 %².
Few assets follow ALX as closely as ROCK, which ranks #2 of 12 tracked partners. Correlation aside, the last 12 months split them widely, with ALX ahead by 53.1 points (+24.1% versus -29.0%).
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.
ALX vs ROCK: side by side
| ALX (Alexander's, Inc.) | ROCK (Gibraltar Industries, Inc.) | |
|---|---|---|
| 1-year return | +24.1% | -29.0% |
| 5-year return | +51.5% | -39.2% |
| Volatility (ann.) | 26.4% | 39.2% |
| Beta vs S&P 500 | 0.64 | 1.19 |
| Max drawdown (3Y) | -23.2% | -61.2% |
| Market cap | $1.4B | $1.4B |
| P/E (trailing) | 8.2 | 22.9 |
| Dividend yield | 6.62% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ALX | ROCK |
|---|---|---|
| 2022 | -9.1% | -31.2% |
| 2023 | +6.4% | +72.1% |
| 2024 | +1.4% | -25.4% |
| 2025 | +18.4% | -16.1% |
| 2026 | +31.2% | -7.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ALX and ROCK good diversifiers for each other?
To a limited degree. At 0.57 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 ALX and ROCK?
Using weekly returns as of 2026-08-27: 0.57 over 3 years, with 0.55 over the last year and 0.48 over 5 years.
Is ROCK a good diversifier for ALX?
To a limited degree. At 0.57 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 0.57 mean?
A reading of 0.57 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/alx-vs-rock.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/alx-vs-rock/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ALX correlations · ROCK correlations
