CCJ vs ISOU: Correlation
How closely do Cameco Corporation (CCJ) and IsoEnergy Ltd. (ISOU) trade together? Their weekly returns over three years give a correlation of 0.71, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CCJ and ISOU?
On 3 years of weekly data the CCJ/ISOU correlation comes out at 0.71, strong. The relationship has been stable: the 1-year correlation (0.76) sits close to the 3-year figure. The 5-year figure is 0.71, and annualized covariance runs at 2050.8 %².
Within CCJ's tracked universe of 15 assets, ISOU comes in at #4 by 3-year correlation. Over the last 12 months ISOU came out ahead by 14.5 percentage points (+41.5% against +56.0%).
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.
CCJ vs ISOU: side by side
| CCJ (Cameco Corporation) | ISOU (IsoEnergy Ltd.) | |
|---|---|---|
| 1-year return | +41.5% | +56.0% |
| 5-year return | +501.7% | +42.5% |
| Volatility (ann.) | 44.1% | 65.5% |
| Beta vs S&P 500 | 1.33 | 1.86 |
| Max drawdown (3Y) | -40.0% | -69.0% |
| Market cap | $46.3B | $0.8B |
| P/E (trailing) | 183.3 | – |
| Dividend yield | 0.22% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CCJ | ISOU |
|---|---|---|
| 2022 | +4.3% | -28.1% |
| 2023 | +90.5% | +31.1% |
| 2024 | +19.5% | -35.1% |
| 2025 | +78.4% | +26.0% |
| 2026 | +16.2% | +34.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CCJ and ISOU good diversifiers for each other?
Somewhat, no more. With 0.71 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between CCJ and ISOU?
Using weekly returns as of 2026-08-27: 0.71 over 3 years, with 0.76 over the last year and 0.71 over 5 years.
Is ISOU a good diversifier for CCJ?
Somewhat, no more. With 0.71 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.71 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/ccj-vs-isou.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ccj-vs-isou/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CCJ correlations · ISOU correlations
