FAST vs RPM: Correlation
How closely do Fastenal (FAST) and RPM International Inc. (RPM) trade together? Their weekly returns over three years give a correlation of 0.53, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FAST and RPM?
On 3 years of weekly data the FAST/RPM correlation comes out at 0.53, moderate. Little has changed lately, as the 1-year reading of 0.54 lands near the 3-year figure. The 5-year figure is 0.55, and annualized covariance runs at 320.9 %².
Within FAST's tracked universe of 33 assets, RPM comes in at #8 by 3-year correlation. The last year tells two different stories: FAST led by 18.4 percentage points, +4.1% for FAST against -14.3% for RPM.
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.
FAST vs RPM: side by side
| FAST (Fastenal) | RPM (RPM International Inc.) | |
|---|---|---|
| 1-year return | +4.1% | -14.3% |
| 5-year return | +105.5% | +38.7% |
| Volatility (ann.) | 24.0% | 25.0% |
| Beta vs S&P 500 | 0.63 | 0.85 |
| Max drawdown (3Y) | -21.9% | -32.0% |
| Market cap | $58.7B | $13.5B |
| P/E (trailing) | 43.7 | 20.7 |
| Dividend yield | 1.80% | 1.99% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | FAST | RPM |
|---|---|---|
| 2022 | -24.3% | -1.7% |
| 2023 | +41.3% | +16.8% |
| 2024 | +13.5% | +12.1% |
| 2025 | +14.0% | -13.9% |
| 2026 | +29.5% | +3.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FAST and RPM good diversifiers for each other?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between FAST and RPM?
Using weekly returns as of 2026-08-27: 0.53 over 3 years, with 0.54 over the last year and 0.55 over 5 years.
Is RPM a good diversifier for FAST?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.53 mean?
On the −1 to +1 scale, 0.53 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/fast-vs-rpm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/fast-vs-rpm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FAST correlations · RPM correlations
