GNRC vs SSD: Correlation
Measured on weekly returns over the past three years, Generac (GNRC) and Simpson Manufacturing Company, Inc. (SSD) carry a correlation of 0.61, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GNRC and SSD?
Across a 3-year window, the weekly returns of GNRC and SSD correlate at 0.61, strong. Little has changed lately, as the 1-year reading of 0.63 lands near the 3-year figure. Stretching to 5 years gives 0.51, with an annualized covariance of 832.5 %².
In GNRC's tracked universe of 35 assets, SSD sits right near the top at #1. On 12-month performance GNRC holds a 10.8-point edge, +5.5% against -5.3%. Note the risk asymmetry: GNRC runs 1.6 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
GNRC vs SSD: side by side
| GNRC (Generac) | SSD (Simpson Manufacturing Company, Inc.) | |
|---|---|---|
| 1-year return | +5.5% | -5.3% |
| 5-year return | -55.4% | +65.7% |
| Volatility (ann.) | 46.1% | 29.5% |
| Beta vs S&P 500 | 1.35 | 0.89 |
| Max drawdown (3Y) | -47.8% | -34.4% |
| Market cap | $11.6B | $7.5B |
| P/E (trailing) | 47.4 | 20.3 |
| Dividend yield | 0.00% | 0.63% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | GNRC | SSD |
|---|---|---|
| 2022 | -71.4% | -35.6% |
| 2023 | +28.4% | +125.4% |
| 2024 | +20.0% | -15.7% |
| 2025 | -12.0% | -1.9% |
| 2026 | +44.7% | +13.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GNRC and SSD good diversifiers for each other?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between GNRC and SSD?
The GNRC/SSD correlation stands at 0.61 on a 3-year window (1 year: 0.63, 5 years: 0.51), computed from weekly returns as of 2026-08-27.
Is SSD a good diversifier for GNRC?
Somewhat, no more. With 0.61 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.61 mean?
A reading of 0.61 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/gnrc-vs-ssd.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/gnrc-vs-ssd/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: GNRC correlations · SSD correlations
