EXLS vs PSO: Correlation
ExlService Holdings, Inc. (EXLS) and Pearson, Plc (PSO) show a moderate relationship: their 3-year correlation of weekly returns is 0.41.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EXLS and PSO?
Over the past 3 years, EXLS and PSO moved with a correlation of 0.41, which is moderate. Recent behaviour matches the longer record: 0.47 over 1 year against 0.41 over 3. Over 5 years the correlation is 0.33, and the annualized covariance of weekly returns is 287.3 %².
By 3-year correlation, PSO places #39 of the 47 assets tracked against EXLS. Correlation aside, the last 12 months split them widely, with PSO ahead by 29.0 points (-13.4% versus +15.6%).
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.
EXLS vs PSO: side by side
| EXLS (ExlService Holdings, Inc.) | PSO (Pearson, Plc) | |
|---|---|---|
| 1-year return | -13.4% | +15.6% |
| 5-year return | +55.2% | +77.5% |
| Volatility (ann.) | 31.7% | 22.1% |
| Beta vs S&P 500 | 0.77 | 0.31 |
| Max drawdown (3Y) | -51.3% | -30.7% |
| Market cap | $5.8B | $10.0B |
| P/E (trailing) | 23.7 | 24.1 |
| Dividend yield | 0.00% | 1.56% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EXLS | PSO |
|---|---|---|
| 2022 | +17.0% | +37.7% |
| 2023 | -9.0% | +12.0% |
| 2024 | +43.9% | +34.2% |
| 2025 | -4.4% | -11.2% |
| 2026 | -10.0% | +21.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EXLS and PSO good diversifiers for each other?
Reasonably. At 0.41, EXLS and PSO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between EXLS and PSO?
Using weekly returns as of 2026-08-27: 0.41 over 3 years, with 0.47 over the last year and 0.33 over 5 years.
Is PSO a good diversifier for EXLS?
Reasonably. At 0.41, EXLS and PSO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.41 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/exls-vs-pso.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/exls-vs-pso/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EXLS correlations · PSO correlations
