MRSH vs PUMP: Correlation
Measured on weekly returns over the past three years, Marsh McLennan (MRSH) and ProPetro Holding Corp. (PUMP) carry a correlation of -0.23, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MRSH and PUMP?
On 3 years of weekly data the MRSH/PUMP correlation comes out at -0.23, negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.42 versus -0.23 over 3 years. The 5-year figure is -0.09, and annualized covariance runs at -274.7 %².
Among the 38 assets we track against MRSH, PUMP sits near the bottom by co-movement, at rank #36. Correlation aside, the last 12 months split them widely, with PUMP ahead by 134.2 points (-6.0% versus +128.2%). Note the risk asymmetry: PUMP runs 3.6 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 PUMP: side by side
| MRSH (Marsh McLennan) | PUMP (ProPetro Holding Corp.) | |
|---|---|---|
| 1-year return | -6.0% | +128.2% |
| 5-year return | +31.3% | +45.4% |
| Volatility (ann.) | 18.1% | 65.1% |
| Beta vs S&P 500 | 0.33 | 0.73 |
| Max drawdown (3Y) | -34.4% | -59.1% |
| Market cap | $90.7B | $1.4B |
| P/E (trailing) | 23.6 | – |
| Dividend yield | 1.91% | 0.00% |
| Sector / category | Financials | US Listed |
Year-by-year returns
| Year | MRSH | PUMP |
|---|---|---|
| 2022 | -3.5% | +28.0% |
| 2023 | +16.1% | -19.2% |
| 2024 | +13.7% | +11.3% |
| 2025 | -11.3% | +1.9% |
| 2026 | +4.0% | +17.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MRSH and PUMP good diversifiers for each other?
Yes: at -0.23, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between MRSH and PUMP?
Using weekly returns as of 2026-08-27: -0.23 over 3 years, with -0.42 over the last year and -0.09 over 5 years.
Is PUMP a good diversifier for MRSH?
Yes: at -0.23, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.23 mean?
A reading of -0.23 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
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Related comparisons
Hubs: MRSH correlations · PUMP correlations
