ADP vs EFX: Correlation
Measured on weekly returns over the past three years, Automatic Data Processing (ADP) and Equifax (EFX) carry a correlation of 0.51, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ADP and EFX?
Over the past 3 years, ADP and EFX moved with a correlation of 0.51, which is moderate. Lately the two have moved closer together, with the 1-year correlation at 0.63 versus 0.51 over 3 years. Over 5 years the correlation is 0.54, and the annualized covariance of weekly returns is 371.5 %².
By 3-year correlation, EFX places #18 of the 43 assets tracked against ADP. Correlation aside, the last 12 months split them widely, with ADP ahead by 18.3 points (-3.5% versus -21.8%). The rolling one-year correlation moved between 0.28 and 0.62 over the past three years, a moderate range. One caveat on sizing: EFX is 1.5 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.
ADP vs EFX: side by side
| ADP (Automatic Data Processing) | EFX (Equifax) | |
|---|---|---|
| 1-year return | -3.5% | -21.8% |
| 5-year return | +52.0% | -26.0% |
| Volatility (ann.) | 21.7% | 33.3% |
| Beta vs S&P 500 | 0.53 | 1.25 |
| Max drawdown (3Y) | -40.8% | -49.7% |
| Market cap | $113.1B | $22.4B |
| P/E (trailing) | 26.0 | 33.5 |
| Dividend yield | 2.36% | 1.11% |
| Sector / category | Industrials | Industrials |
Year-by-year returns
| Year | ADP | EFX |
|---|---|---|
| 2022 | -1.3% | -33.1% |
| 2023 | -0.2% | +28.2% |
| 2024 | +28.4% | +3.7% |
| 2025 | -10.2% | -14.2% |
| 2026 | +12.4% | -11.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ADP and EFX good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ADP and EFX?
Using weekly returns as of 2026-08-27: 0.51 over 3 years, with 0.63 over the last year and 0.54 over 5 years.
Is EFX a good diversifier for ADP?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.51 mean?
A reading of 0.51 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/adp-vs-efx.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/adp-vs-efx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ADP correlations · EFX correlations
