EFX vs RNG: Correlation
Measured on weekly returns over the past three years, Equifax (EFX) and RingCentral, Inc. (RNG) carry a correlation of 0.50, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFX and RNG?
Over the past 3 years, EFX and RNG moved with a correlation of 0.50, which is moderate. Recent behaviour matches the longer record: 0.47 over 1 year against 0.50 over 3. Over 5 years the correlation is 0.47, and the annualized covariance of weekly returns is 865.4 %².
Within EFX's tracked universe of 53 assets, RNG comes in at #26 by 3-year correlation. The last year tells two different stories: RNG led by 146.1 percentage points, -21.8% for EFX against +124.3% for RNG. One caveat on sizing: RNG is 1.6 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.
EFX vs RNG: side by side
| EFX (Equifax) | RNG (RingCentral, Inc.) | |
|---|---|---|
| 1-year return | -21.8% | +124.3% |
| 5-year return | -26.0% | -73.1% |
| Volatility (ann.) | 33.3% | 52.2% |
| Beta vs S&P 500 | 1.25 | 1.54 |
| Max drawdown (3Y) | -49.7% | -48.6% |
| Market cap | $22.4B | $5.7B |
| P/E (trailing) | 33.5 | 52.7 |
| Dividend yield | 1.11% | 0.23% |
| Sector / category | Industrials | US Listed |
Year-by-year returns
| Year | EFX | RNG |
|---|---|---|
| 2022 | -33.1% | -81.1% |
| 2023 | +28.2% | -4.1% |
| 2024 | +3.7% | +3.1% |
| 2025 | -14.2% | -17.5% |
| 2026 | -11.7% | +138.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFX and RNG good diversifiers for each other?
Somewhat, no more. With 0.50 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between EFX and RNG?
The EFX/RNG correlation stands at 0.50 on a 3-year window (1 year: 0.47, 5 years: 0.47), computed from weekly returns as of 2026-08-27.
Is RNG a good diversifier for EFX?
Somewhat, no more. With 0.50 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.50 mean?
On the −1 to +1 scale, 0.50 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-rng.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/efx-vs-rng/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EFX correlations · RNG correlations
