EFX vs SPY: Correlation
Measured on weekly returns over the past three years, Equifax (EFX) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.54, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFX and SPY?
Over the past 3 years, EFX and SPY moved with a correlation of 0.54, which is moderate. The link has loosened recently: the 1-year correlation (0.24) runs below the 3-year figure (0.54). Over 5 years the correlation is 0.63, and the annualized covariance of weekly returns is 261.7 %².
Among the 53 assets we track against EFX, SPY ranks #19 by 3-year correlation. The last year tells two different stories: SPY led by 42.4 percentage points, -21.8% for EFX against +20.6% for SPY. The relationship is regime-dependent: the rolling one-year correlation swung between 0.27 and 0.79 over the past three years, so this pair behaves very differently depending on the market environment. Risk is not evenly split, since EFX carries 2.3 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.
EFX vs SPY: side by side
| EFX (Equifax) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -21.8% | +20.6% |
| 5-year return | -26.0% | +82.4% |
| Volatility (ann.) | 33.3% | 14.5% |
| Beta vs S&P 500 | 1.25 | 1.00 |
| Max drawdown (3Y) | -49.7% | -18.8% |
| Market cap | $22.4B | – |
| P/E (trailing) | 33.5 | – |
| Dividend yield | 1.11% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | Industrials | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | EFX | SPY |
|---|---|---|
| 2022 | -33.1% | -18.2% |
| 2023 | +28.2% | +26.2% |
| 2024 | +3.7% | +24.9% |
| 2025 | -14.2% | +17.7% |
| 2026 | -11.7% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFX and SPY good diversifiers for each other?
Somewhat, no more. With 0.54 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between EFX and SPY?
As of 2026-08-27, the correlation of weekly returns between EFX and SPY is 0.54 over 3 years, 0.24 over 1 year and 0.63 over 5 years.
Is SPY a good diversifier for EFX?
Somewhat, no more. With 0.54 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.54 mean?
On the −1 to +1 scale, 0.54 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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Hubs: EFX correlations · SPY correlations
