PCAR vs USAR: Correlation
Paccar (PCAR) and USA Rare Earth, Inc. (USAR) show a negative relationship: their 3-year correlation of weekly returns is -0.22.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PCAR and USAR?
Over the past 3 years, PCAR and USAR moved with a correlation of -0.22, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.20) sits close to the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -526.2 %².
Within PCAR's tracked universe of 27 assets, USAR comes in at #22 by 3-year correlation. Over the last 12 months PCAR came out ahead by 5.1 percentage points (+27.8% against +22.7%). Risk is not evenly split, since USAR carries 4.1 times the volatility of the other side.
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.
PCAR vs USAR: side by side
| PCAR (Paccar) | USAR (USA Rare Earth, Inc.) | |
|---|---|---|
| 1-year return | +27.8% | +22.7% |
| 5-year return | +177.9% | n/a |
| Volatility (ann.) | 24.1% | 98.3% |
| Beta vs S&P 500 | 0.74 | -0.14 |
| Max drawdown (3Y) | -27.7% | -69.2% |
| Market cap | $66.6B | $4.7B |
| P/E (trailing) | 26.6 | – |
| Dividend yield | 1.04% | 0.00% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | PCAR | USAR |
|---|---|---|
| 2022 | +17.0% | – |
| 2023 | +55.0% | – |
| 2024 | +10.8% | +11.1% |
| 2025 | +8.0% | +3.7% |
| 2026 | +16.5% | +61.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PCAR and USAR good diversifiers for each other?
Yes. With a correlation of -0.22, PCAR and USAR have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between PCAR and USAR?
The PCAR/USAR correlation stands at -0.22 on a 3-year window (1 year: -0.20, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is USAR a good diversifier for PCAR?
Yes. With a correlation of -0.22, PCAR and USAR have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.22 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/pcar-vs-usar.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/pcar-vs-usar/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: PCAR correlations · USAR correlations
