EFX vs FFIV: Correlation
How closely do Equifax (EFX) and F5, Inc. (FFIV) trade together? Their weekly returns over three years give a correlation of 0.43, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFX and FFIV?
Across a 3-year window, the weekly returns of EFX and FFIV correlate at 0.43, moderate. Little has changed lately, as the 1-year reading of 0.34 lands near the 3-year figure. Stretching to 5 years gives 0.44, with an annualized covariance of 383.6 %².
By 3-year correlation, FFIV places #36 of the 53 assets tracked against EFX. Correlation aside, the last 12 months split them widely, with FFIV ahead by 50.9 points (-21.8% versus +29.1%). Stability stands out here, with the rolling one-year correlation confined to 0.34 through 0.57.
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 FFIV: side by side
| EFX (Equifax) | FFIV (F5, Inc.) | |
|---|---|---|
| 1-year return | -21.8% | +29.1% |
| 5-year return | -26.0% | +99.3% |
| Volatility (ann.) | 33.3% | 26.6% |
| Beta vs S&P 500 | 1.25 | 0.77 |
| Max drawdown (3Y) | -49.7% | -34.7% |
| Market cap | $22.4B | $23.2B |
| P/E (trailing) | 33.5 | 31.8 |
| Dividend yield | 1.11% | 0.00% |
| Sector / category | Industrials | Information Technology |
Year-by-year returns
| Year | EFX | FFIV |
|---|---|---|
| 2022 | -33.1% | -41.4% |
| 2023 | +28.2% | +24.7% |
| 2024 | +3.7% | +40.5% |
| 2025 | -14.2% | +1.5% |
| 2026 | -11.7% | +60.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFX and FFIV good diversifiers for each other?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between EFX and FFIV?
As of 2026-08-27, the correlation of weekly returns between EFX and FFIV is 0.43 over 3 years, 0.34 over 1 year and 0.44 over 5 years.
Is FFIV a good diversifier for EFX?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.43 mean?
A reading of 0.43 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/efx-vs-ffiv.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/efx-vs-ffiv/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: EFX correlations · FFIV correlations
