CB vs MRSH: Correlation
Measured on weekly returns over the past three years, Chubb Limited (CB) and Marsh McLennan (MRSH) carry a correlation of 0.51, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CB and MRSH?
On 3 years of weekly data the CB/MRSH correlation comes out at 0.51, moderate. Little has changed lately, as the 1-year reading of 0.51 lands near the 3-year figure. The 5-year figure is 0.52, and annualized covariance runs at 164.0 %².
Within CB's tracked universe of 37 assets, MRSH comes in at #19 by 3-year correlation. Correlation aside, the last 12 months split them widely, with CB ahead by 30.7 points (+24.7% versus -6.0%). The rolling one-year correlation stayed in a tight band between 0.44 and 0.60 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.
CB vs MRSH: side by side
| CB (Chubb Limited) | MRSH (Marsh McLennan) | |
|---|---|---|
| 1-year return | +24.7% | -6.0% |
| 5-year return | +96.8% | +31.3% |
| Volatility (ann.) | 17.7% | 18.1% |
| Beta vs S&P 500 | 0.17 | 0.33 |
| Max drawdown (3Y) | -14.4% | -34.4% |
| Market cap | $130.5B | $90.7B |
| P/E (trailing) | 12.2 | 23.6 |
| Dividend yield | 1.14% | 1.91% |
| Sector / category | Financials | Financials |
Year-by-year returns
| Year | CB | MRSH |
|---|---|---|
| 2022 | +16.0% | -3.5% |
| 2023 | +4.2% | +16.1% |
| 2024 | +23.9% | +13.7% |
| 2025 | +13.7% | -11.3% |
| 2026 | +9.1% | +4.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CB and MRSH good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between CB and MRSH?
The CB/MRSH correlation stands at 0.51 on a 3-year window (1 year: 0.51, 5 years: 0.52), computed from weekly returns as of 2026-08-27.
Is MRSH a good diversifier for CB?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.51 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.
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Related comparisons
Hubs: CB correlations · MRSH correlations
