EFX vs MCO: Correlation
How closely do Equifax (EFX) and Moody's Corporation (MCO) trade together? Their weekly returns over three years give a correlation of 0.59, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFX and MCO?
On 3 years of weekly data the EFX/MCO correlation comes out at 0.59, moderate. Little has changed lately, as the 1-year reading of 0.60 lands near the 3-year figure. The 5-year figure is 0.67, and annualized covariance runs at 504.9 %².
Within EFX's tracked universe of 53 assets, MCO comes in at #7 by 3-year correlation. Correlation aside, the last 12 months split them widely, with MCO ahead by 22.5 points (-21.8% versus +0.7%). The rolling one-year correlation moved between 0.45 and 0.81 over the past three years, a moderate range.
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 MCO: side by side
| EFX (Equifax) | MCO (Moody's Corporation) | |
|---|---|---|
| 1-year return | -21.8% | +0.7% |
| 5-year return | -26.0% | +39.4% |
| Volatility (ann.) | 33.3% | 25.8% |
| Beta vs S&P 500 | 1.25 | 1.08 |
| Max drawdown (3Y) | -49.7% | -24.7% |
| Market cap | $22.4B | $88.2B |
| P/E (trailing) | 33.5 | 32.7 |
| Dividend yield | 1.11% | 0.77% |
| Sector / category | Industrials | Financials |
Year-by-year returns
| Year | EFX | MCO |
|---|---|---|
| 2022 | -33.1% | -28.0% |
| 2023 | +28.2% | +41.5% |
| 2024 | +3.7% | +22.2% |
| 2025 | -14.2% | +8.7% |
| 2026 | -11.7% | +0.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFX and MCO good diversifiers for each other?
To a limited degree. At 0.59 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between EFX and MCO?
As of 2026-08-27, the correlation of weekly returns between EFX and MCO is 0.59 over 3 years, 0.60 over 1 year and 0.67 over 5 years.
Is MCO a good diversifier for EFX?
To a limited degree. At 0.59 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.59 mean?
On the −1 to +1 scale, 0.59 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/efx-vs-mco.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/efx-vs-mco/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: EFX correlations · MCO correlations
