GRC vs SSD: Correlation
Gorman-Rupp Company (The) (GRC) and Simpson Manufacturing Company, Inc. (SSD) show a strong relationship: their 3-year correlation of weekly returns is 0.64.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GRC and SSD?
On 3 years of weekly data the GRC/SSD correlation comes out at 0.64, strong. Recent behaviour matches the longer record: 0.64 over 1 year against 0.64 over 3. The 5-year figure is 0.57, and annualized covariance runs at 577.4 %².
By 3-year correlation, SSD places #4 of the 14 assets tracked against GRC. Correlation aside, the last 12 months split them widely, with GRC ahead by 87.7 points (+82.4% versus -5.3%).
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.
GRC vs SSD: side by side
| GRC (Gorman-Rupp Company (The)) | SSD (Simpson Manufacturing Company, Inc.) | |
|---|---|---|
| 1-year return | +82.4% | -5.3% |
| 5-year return | +143.0% | +65.7% |
| Volatility (ann.) | 30.6% | 29.5% |
| Beta vs S&P 500 | 0.85 | 0.89 |
| Max drawdown (3Y) | -26.9% | -34.4% |
| Market cap | $2.0B | $7.5B |
| P/E (trailing) | 32.7 | 20.3 |
| Dividend yield | 0.97% | 0.63% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GRC | SSD |
|---|---|---|
| 2022 | -41.2% | -35.6% |
| 2023 | +42.2% | +125.4% |
| 2024 | +8.9% | -15.7% |
| 2025 | +28.2% | -1.9% |
| 2026 | +63.7% | +13.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GRC and SSD good diversifiers for each other?
Somewhat, no more. With 0.64 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between GRC and SSD?
The GRC/SSD correlation stands at 0.64 on a 3-year window (1 year: 0.64, 5 years: 0.57), computed from weekly returns as of 2026-08-27.
Is SSD a good diversifier for GRC?
Somewhat, no more. With 0.64 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.64 mean?
A reading of 0.64 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/grc-vs-ssd.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/grc-vs-ssd/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: GRC correlations · SSD correlations
