ROCK vs SXI: Correlation
Measured on weekly returns over the past three years, Gibraltar Industries, Inc. (ROCK) and Standex International Corporation (SXI) carry a correlation of 0.62, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ROCK and SXI?
On 3 years of weekly data the ROCK/SXI correlation comes out at 0.62, strong. Recent behaviour matches the longer record: 0.64 over 1 year against 0.62 over 3. The 5-year figure is 0.63, and annualized covariance runs at 800.9 %².
Among the 15 assets we track against ROCK, SXI ranks #6 by 3-year correlation. The last year tells two different stories: SXI led by 73.5 percentage points, -29.0% for ROCK against +44.5% for SXI.
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.
ROCK vs SXI: side by side
| ROCK (Gibraltar Industries, Inc.) | SXI (Standex International Corporation) | |
|---|---|---|
| 1-year return | -29.0% | +44.5% |
| 5-year return | -39.2% | +218.6% |
| Volatility (ann.) | 39.2% | 33.0% |
| Beta vs S&P 500 | 1.19 | 1.04 |
| Max drawdown (3Y) | -61.2% | -38.0% |
| Market cap | $1.4B | $3.7B |
| P/E (trailing) | 22.9 | 35.2 |
| Dividend yield | 0.00% | 0.44% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ROCK | SXI |
|---|---|---|
| 2022 | -31.2% | -6.5% |
| 2023 | +72.1% | +56.0% |
| 2024 | -25.4% | +18.9% |
| 2025 | -16.1% | +17.0% |
| 2026 | -7.3% | +40.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ROCK and SXI 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 ROCK and SXI?
Using weekly returns as of 2026-08-27: 0.62 over 3 years, with 0.64 over the last year and 0.63 over 5 years.
Is SXI a good diversifier for ROCK?
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?
A reading of 0.62 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/rock-vs-sxi.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/rock-vs-sxi/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ROCK correlations · SXI correlations
