SPY vs WDFC: Correlation
Measured on weekly returns over the past three years, SPDR S&P 500 ETF Trust (SPY) and WD-40 Company (WDFC) carry a correlation of 0.09, a near-zero link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPY and WDFC?
Across a 3-year window, the weekly returns of SPY and WDFC correlate at 0.09, near zero, meaning they move largely independently. Recent behaviour matches the longer record: 0.11 over 1 year against 0.09 over 3. Stretching to 5 years gives 0.29, with an annualized covariance of 36.8 %².
Among the 4755 assets we track against SPY, WDFC ranks #4184 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months SPY outperformed by 19.9 percentage points (+20.6% for SPY against +0.7% for WDFC). Risk is not evenly split, since WDFC carries 1.9 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 WDFC: side by side
| SPY (SPDR S&P 500 ETF Trust) | WDFC (WD-40 Company) | |
|---|---|---|
| 1-year return | +20.6% | +0.7% |
| 5-year return | +82.4% | +0.9% |
| Volatility (ann.) | 14.5% | 27.6% |
| Beta vs S&P 500 | 1.00 | 0.18 |
| Max drawdown (3Y) | -18.8% | -34.2% |
| Market cap | – | $2.9B |
| P/E (trailing) | – | 33.3 |
| Dividend yield | 1.01% | 1.85% |
| Expense ratio | 0.09% | – |
| Assets under management | $795.3B | – |
| Sector / category | ETF · US Large Cap | US Listed |
On the fund side, SPY sits in the Large Blend category at State Street Investment Management, with $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | SPY | WDFC |
|---|---|---|
| 2022 | -18.2% | -33.0% |
| 2023 | +26.2% | +50.9% |
| 2024 | +24.9% | +2.9% |
| 2025 | +17.7% | -17.4% |
| 2026 | +13.7% | +12.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPY and WDFC good diversifiers for each other?
By historical standards, yes. A correlation of 0.09 means the two rarely move for the same reasons.
FAQ
What is the correlation between SPY and WDFC?
Using weekly returns as of 2026-08-27: 0.09 over 3 years, with 0.11 over the last year and 0.29 over 5 years.
Is WDFC a good diversifier for SPY?
By historical standards, yes. A correlation of 0.09 means the two rarely move for the same reasons.
What does a correlation of 0.09 mean?
A reading of 0.09 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/spy-vs-wdfc.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/spy-vs-wdfc/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: SPY correlations · WDFC correlations
