MRSH vs ROP: Correlation
Marsh McLennan (MRSH) and Roper Technologies (ROP) show a moderate relationship: their 3-year correlation of weekly returns is 0.56.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MRSH and ROP?
On 3 years of weekly data the MRSH/ROP correlation comes out at 0.56, moderate. The relationship has been stable: the 1-year correlation (0.64) sits close to the 3-year figure. The 5-year figure is 0.66, and annualized covariance runs at 208.2 %².
Within MRSH's tracked universe of 38 assets, ROP comes in at #8 by 3-year correlation. The trailing year gives MRSH the advantage: -6.0% versus -19.3%, a 13.3-point spread. This link changes with the market regime, having swung between 0.21 and 0.74 on a rolling one-year basis.
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.
MRSH vs ROP: side by side
| MRSH (Marsh McLennan) | ROP (Roper Technologies) | |
|---|---|---|
| 1-year return | -6.0% | -19.3% |
| 5-year return | +31.3% | -9.6% |
| Volatility (ann.) | 18.1% | 20.5% |
| Beta vs S&P 500 | 0.33 | 0.55 |
| Max drawdown (3Y) | -34.4% | -46.5% |
| Market cap | $90.7B | $41.8B |
| P/E (trailing) | 23.6 | 17.6 |
| Dividend yield | 1.91% | 0.86% |
| Sector / category | Financials | Information Technology |
Year-by-year returns
| Year | MRSH | ROP |
|---|---|---|
| 2022 | -3.5% | -11.6% |
| 2023 | +16.1% | +26.9% |
| 2024 | +13.7% | -4.1% |
| 2025 | -11.3% | -13.8% |
| 2026 | +4.0% | -4.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MRSH and ROP good diversifiers for each other?
Somewhat, no more. With 0.56 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between MRSH and ROP?
The MRSH/ROP correlation stands at 0.56 on a 3-year window (1 year: 0.64, 5 years: 0.66), computed from weekly returns as of 2026-08-27.
Is ROP a good diversifier for MRSH?
Somewhat, no more. With 0.56 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.56 mean?
A reading of 0.56 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/mrsh-vs-rop.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/mrsh-vs-rop/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: MRSH correlations · ROP correlations
