MRSH vs QQQ: Correlation
How closely do Marsh McLennan (MRSH) and Invesco QQQ Trust (QQQ) trade together? Their weekly returns over three years give a correlation of 0.13, which is weak.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are MRSH and QQQ?
Over the past 3 years, MRSH and QQQ moved with a correlation of 0.13, which is weak. The link has loosened recently: the 1-year correlation (-0.12) runs below the 3-year figure (0.13). Over 5 years the correlation is 0.39, and the annualized covariance of weekly returns is 44.6 %².
Among the 38 assets we track against MRSH, QQQ ranks #26 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months QQQ outperformed by 32.3 percentage points (-6.0% for MRSH against +26.3% for QQQ). Do not treat this figure as fixed: across three years the rolling one-year correlation ranged all the way from -0.10 to 0.50.
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 QQQ: side by side
| MRSH (Marsh McLennan) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | -6.0% | +26.3% |
| 5-year return | +31.3% | +95.4% |
| Volatility (ann.) | 18.1% | 19.6% |
| Beta vs S&P 500 | 0.33 | 1.28 |
| Max drawdown (3Y) | -34.4% | -22.8% |
| Market cap | $90.7B | – |
| P/E (trailing) | 23.6 | – |
| Dividend yield | 1.91% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | Financials | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | MRSH | QQQ |
|---|---|---|
| 2022 | -3.5% | -32.6% |
| 2023 | +16.1% | +54.9% |
| 2024 | +13.7% | +25.6% |
| 2025 | -11.3% | +20.8% |
| 2026 | +4.0% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are MRSH and QQQ good diversifiers for each other?
Yes: at 0.13, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between MRSH and QQQ?
Using weekly returns as of 2026-08-27: 0.13 over 3 years, with -0.12 over the last year and 0.39 over 5 years.
Is QQQ a good diversifier for MRSH?
Yes: at 0.13, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of 0.13 mean?
A reading of 0.13 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-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/mrsh-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: MRSH correlations · QQQ correlations
