BRK.B vs CB: Correlation
How closely do Berkshire Hathaway (BRK.B) and Chubb Limited (CB) trade together? Their weekly returns over three years give a correlation of 0.57, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BRK.B and CB?
On 3 years of weekly data the BRK.B/CB correlation comes out at 0.57, moderate. Recent behaviour matches the longer record: 0.55 over 1 year against 0.57 over 3. The 5-year figure is 0.61, and annualized covariance runs at 160.1 %².
Among the 31 assets we track against BRK.B, CB ranks #15 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months CB outperformed by 23.1 percentage points (+1.6% for BRK.B against +24.7% for CB). The rolling one-year correlation stayed in a tight band between 0.42 and 0.65 over the past three years, which points to a structural rather than episodic relationship.
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.
BRK.B vs CB: side by side
| BRK.B (Berkshire Hathaway) | CB (Chubb Limited) | |
|---|---|---|
| 1-year return | +1.6% | +24.7% |
| 5-year return | +76.3% | +96.8% |
| Volatility (ann.) | 15.9% | 17.7% |
| Beta vs S&P 500 | 0.43 | 0.17 |
| Max drawdown (3Y) | -14.9% | -14.4% |
| Market cap | $1,078.3B | $130.5B |
| P/E (trailing) | 12.7 | 12.2 |
| Dividend yield | 0.00% | 1.14% |
| Sector / category | Financials | Financials |
Year-by-year returns
| Year | BRK.B | CB |
|---|---|---|
| 2022 | +3.3% | +16.0% |
| 2023 | +15.5% | +4.2% |
| 2024 | +27.1% | +23.9% |
| 2025 | +10.9% | +13.7% |
| 2026 | +0.2% | +9.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BRK.B and CB good diversifiers for each other?
Somewhat, no more. With 0.57 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BRK.B and CB?
The BRK.B/CB correlation stands at 0.57 on a 3-year window (1 year: 0.55, 5 years: 0.61), computed from weekly returns as of 2026-08-27.
Is CB a good diversifier for BRK.B?
Somewhat, no more. With 0.57 correlation, most large moves hit both names, and the diversification benefit stays modest.
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/brk-b-vs-cb.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/brk-b-vs-cb/)
Free with attribution; caching and terms are described in the API documentation.
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Hubs: BRK.B correlations · CB correlations
