SPY vs WCC: Correlation
SPDR S&P 500 ETF Trust (SPY) and WESCO International, Inc. (WCC) show a strong relationship: their 3-year correlation of weekly returns is 0.60.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and WCC?
On 3 years of weekly data the SPY/WCC correlation comes out at 0.60, strong. The past 12 months show a weaker link (0.45) than the 3-year average (0.60). The 5-year figure is 0.63, and annualized covariance runs at 332.5 %².
Within SPY's tracked universe of 4755 assets, WCC comes in at #180 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months WCC outperformed by 34.8 percentage points (+20.6% for SPY against +55.4% for WCC). Risk is not evenly split, since WCC carries 2.6 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.
SPY vs WCC: side by side
| SPY (SPDR S&P 500 ETF Trust) | WCC (WESCO International, Inc.) | |
|---|---|---|
| 1-year return | +20.6% | +55.4% |
| 5-year return | +82.4% | +203.7% |
| Volatility (ann.) | 14.5% | 38.3% |
| Beta vs S&P 500 | 1.00 | 1.59 |
| Max drawdown (3Y) | -18.8% | -37.4% |
| Market cap | – | $17.1B |
| P/E (trailing) | – | 24.0 |
| Dividend yield | 1.01% | 0.55% |
| 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 | WCC |
|---|---|---|
| 2022 | -18.2% | -4.9% |
| 2023 | +26.2% | +40.2% |
| 2024 | +24.9% | +5.1% |
| 2025 | +17.7% | +36.4% |
| 2026 | +13.7% | +43.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and WCC good diversifiers for each other?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between SPY and WCC?
The SPY/WCC correlation stands at 0.60 on a 3-year window (1 year: 0.45, 5 years: 0.63), computed from weekly returns as of 2026-08-27.
Is WCC a good diversifier for SPY?
Somewhat, no more. With 0.60 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.60 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-wcc.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/spy-vs-wcc/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: SPY correlations · WCC correlations
