ACGL vs CNA: Correlation
Measured on weekly returns over the past three years, Arch Capital Group (ACGL) and CNA Financial Corporation (CNA) carry a correlation of 0.57, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACGL and CNA?
On 3 years of weekly data the ACGL/CNA correlation comes out at 0.57, moderate. The link has tightened recently: the 1-year correlation (0.69) runs above the 3-year figure (0.57). The 5-year figure is 0.58, and annualized covariance runs at 240.7 %².
Within ACGL's tracked universe of 36 assets, CNA comes in at #12 by 3-year correlation. Their 12-month results are close: +7.7% for ACGL against +7.6% for CNA.
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 CNA: side by side
| ACGL (Arch Capital Group) | CNA (CNA Financial Corporation) | |
|---|---|---|
| 1-year return | +7.7% | +7.6% |
| 5-year return | +151.8% | +64.0% |
| Volatility (ann.) | 21.5% | 19.8% |
| Beta vs S&P 500 | 0.28 | 0.21 |
| Max drawdown (3Y) | -22.4% | -14.6% |
| Market cap | $33.7B | $13.2B |
| P/E (trailing) | 7.9 | 10.9 |
| Dividend yield | 0.00% | 3.80% |
| Sector / category | Financials | US Listed |
Year-by-year returns
| Year | ACGL | CNA |
|---|---|---|
| 2022 | +41.2% | +3.8% |
| 2023 | +18.3% | +7.1% |
| 2024 | +30.8% | +24.0% |
| 2025 | +3.9% | +7.0% |
| 2026 | +3.0% | +10.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACGL and CNA good diversifiers for each other?
Only partially. A correlation of 0.57 means ACGL and CNA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between ACGL and CNA?
As of 2026-08-27, the correlation of weekly returns between ACGL and CNA is 0.57 over 3 years, 0.69 over 1 year and 0.58 over 5 years.
Is CNA a good diversifier for ACGL?
Only partially. A correlation of 0.57 means ACGL and CNA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.57 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/acgl-vs-cna.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/acgl-vs-cna/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACGL correlations · CNA correlations
