ACGL vs CB: Correlation
Measured on weekly returns over the past three years, Arch Capital Group (ACGL) and Chubb Limited (CB) carry a correlation of 0.66, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACGL and CB?
Over the past 3 years, ACGL and CB moved with a correlation of 0.66, which is strong. The past 12 months show a tighter link (0.79) than the 3-year average (0.66). Over 5 years the correlation is 0.64, and the annualized covariance of weekly returns is 250.1 %².
Few assets follow ACGL as closely as CB, which ranks #2 of 36 tracked partners. Correlation aside, the last 12 months split them widely, with CB ahead by 17.0 points (+7.7% versus +24.7%). On a rolling one-year basis the correlation drifted between 0.43 and 0.80, a moderate band.
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.
ACGL vs CB: side by side
| ACGL (Arch Capital Group) | CB (Chubb Limited) | |
|---|---|---|
| 1-year return | +7.7% | +24.7% |
| 5-year return | +151.8% | +96.8% |
| Volatility (ann.) | 21.5% | 17.7% |
| Beta vs S&P 500 | 0.28 | 0.17 |
| Max drawdown (3Y) | -22.4% | -14.4% |
| Market cap | $33.7B | $130.5B |
| P/E (trailing) | 7.9 | 12.2 |
| Dividend yield | 0.00% | 1.14% |
| Sector / category | Financials | Financials |
Year-by-year returns
| Year | ACGL | CB |
|---|---|---|
| 2022 | +41.2% | +16.0% |
| 2023 | +18.3% | +4.2% |
| 2024 | +30.8% | +23.9% |
| 2025 | +3.9% | +13.7% |
| 2026 | +3.0% | +9.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACGL and CB good diversifiers for each other?
To a limited degree. At 0.66 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 ACGL and CB?
Using weekly returns as of 2026-08-27: 0.66 over 3 years, with 0.79 over the last year and 0.64 over 5 years.
Is CB a good diversifier for ACGL?
To a limited degree. At 0.66 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 0.66 mean?
A reading of 0.66 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/acgl-vs-cb.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acgl-vs-cb/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACGL correlations · CB correlations
