SPY vs WWR: Correlation
SPDR S&P 500 ETF Trust (SPY) and Westwater Resources, Inc. (WWR) show a weak relationship: their 3-year correlation of weekly returns is 0.11.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and WWR?
Over the past 3 years, SPY and WWR moved with a correlation of 0.11, which is weak. The link has tightened recently: the 1-year correlation (0.22) runs above the 3-year figure (0.11). Over 5 years the correlation is 0.19, and the annualized covariance of weekly returns is 161.2 %².
Among the 4755 assets we track against SPY, WWR ranks #4054 by 3-year correlation. The last year tells two different stories: SPY led by 40.3 percentage points, +20.6% for SPY against -19.7% for WWR. One caveat on sizing: WWR is 7.2 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
SPY vs WWR: side by side
| SPY (SPDR S&P 500 ETF Trust) | WWR (Westwater Resources, Inc.) | |
|---|---|---|
| 1-year return | +20.6% | -19.7% |
| 5-year return | +82.4% | -84.4% |
| Volatility (ann.) | 14.5% | 104.7% |
| Beta vs S&P 500 | 1.00 | 0.77 |
| Max drawdown (3Y) | -18.8% | -88.8% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 1.01% | 0.00% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
SPY, State Street Investment Management's Large Blend fund, carries $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | SPY | WWR |
|---|---|---|
| 2022 | -18.2% | -63.3% |
| 2023 | +26.2% | -29.1% |
| 2024 | +24.9% | +26.8% |
| 2025 | +17.7% | +5.6% |
| 2026 | +13.7% | -20.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and WWR good diversifiers for each other?
By historical standards, yes. A correlation of 0.11 means the two rarely move for the same reasons.
FAQ
What is the correlation between SPY and WWR?
As of 2026-08-27, the correlation of weekly returns between SPY and WWR is 0.11 over 3 years, 0.22 over 1 year and 0.19 over 5 years.
Is WWR a good diversifier for SPY?
By historical standards, yes. A correlation of 0.11 means the two rarely move for the same reasons.
What does a correlation of 0.11 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/spy-vs-wwr.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/spy-vs-wwr/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SPY correlations · WWR correlations
