RBC vs WWD: Correlation
How closely do RBC Bearings Incorporated (RBC) and Woodward, Inc. (WWD) trade together? Their weekly returns over three years give a correlation of 0.62, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RBC and WWD?
Across a 3-year window, the weekly returns of RBC and WWD correlate at 0.62, strong. The relationship has been stable: the 1-year correlation (0.71) sits close to the 3-year figure. Stretching to 5 years gives 0.59, with an annualized covariance of 548.4 %².
Within RBC's tracked universe of 12 assets, WWD comes in at #4 by 3-year correlation. On 12-month performance WWD holds a 11.8-point edge, +27.4% against +39.2%.
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.
RBC vs WWD: side by side
| RBC (RBC Bearings Incorporated) | WWD (Woodward, Inc.) | |
|---|---|---|
| 1-year return | +27.4% | +39.2% |
| 5-year return | +128.1% | +191.7% |
| Volatility (ann.) | 26.5% | 33.5% |
| Beta vs S&P 500 | 0.87 | 1.09 |
| Max drawdown (3Y) | -23.6% | -23.6% |
| Market cap | $16.1B | $20.4B |
| P/E (trailing) | 50.7 | 38.5 |
| Dividend yield | 0.00% | 0.28% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RBC | WWD |
|---|---|---|
| 2022 | +4.2% | -11.1% |
| 2023 | +36.1% | +42.0% |
| 2024 | +5.0% | +23.0% |
| 2025 | +49.9% | +82.6% |
| 2026 | +13.5% | +14.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RBC and WWD 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 RBC and WWD?
Using weekly returns as of 2026-08-27: 0.62 over 3 years, with 0.71 over the last year and 0.59 over 5 years.
Is WWD a good diversifier for RBC?
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?
On the −1 to +1 scale, 0.62 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/rbc-vs-wwd.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/rbc-vs-wwd/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: RBC correlations · WWD correlations
