EFX vs LDOS: Correlation
Measured on weekly returns over the past three years, Equifax (EFX) and Leidos (LDOS) carry a correlation of 0.43, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFX and LDOS?
Across a 3-year window, the weekly returns of EFX and LDOS correlate at 0.43, moderate. The relationship has been stable: the 1-year correlation (0.39) sits close to the 3-year figure. Stretching to 5 years gives 0.35, with an annualized covariance of 449.9 %².
By 3-year correlation, LDOS places #37 of the 53 assets tracked against EFX. Twelve-month performance is nearly a tie, at -21.8% for EFX and -22.9% for LDOS. The rolling one-year correlation moved between 0.14 and 0.52 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 LDOS: side by side
| EFX (Equifax) | LDOS (Leidos) | |
|---|---|---|
| 1-year return | -21.8% | -22.9% |
| 5-year return | -26.0% | +52.1% |
| Volatility (ann.) | 33.3% | 31.4% |
| Beta vs S&P 500 | 1.25 | 0.87 |
| Max drawdown (3Y) | -49.7% | -49.5% |
| Market cap | $22.4B | $17.6B |
| P/E (trailing) | 33.5 | 12.8 |
| Dividend yield | 1.11% | 1.23% |
| Sector / category | Industrials | Industrials |
Year-by-year returns
| Year | EFX | LDOS |
|---|---|---|
| 2022 | -33.1% | +20.0% |
| 2023 | +28.2% | +4.5% |
| 2024 | +3.7% | +34.5% |
| 2025 | -14.2% | +26.5% |
| 2026 | -11.7% | -22.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFX and LDOS good diversifiers for each other?
Reasonably. At 0.43, EFX and LDOS keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between EFX and LDOS?
The EFX/LDOS correlation stands at 0.43 on a 3-year window (1 year: 0.39, 5 years: 0.35), computed from weekly returns as of 2026-08-27.
Is LDOS a good diversifier for EFX?
Reasonably. At 0.43, EFX and LDOS keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.43 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/efx-vs-ldos.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/efx-vs-ldos/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: EFX correlations · LDOS correlations
