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Stocks / AON vs MRSH
AON vs MRSH
Aon plc and Marsh & McLennan Companies, Inc. side by side — fundamentals from SEC filings, refreshed nightly. Sector: Financial Services.
MRSH is the larger company ($79.1B vs $69.8B). On the fundamentals, MRSH grows revenue faster (9.4% vs 9.2%); AON earns a higher net margin (21.5% vs 15.4%); AON has the stronger return on equity (39.5% vs 27.2%). Full numbers below — the stronger figure on each row is in green.
| Aon plc (AON) | Marsh & McLennan Companies, Inc. (MRSH) | |
|---|---|---|
| Market cap | $69.8B | $79.1B |
| Revenue (latest FY) | $17.18B | $26.98B |
| Net income (latest FY) | $3.69B | $4.16B |
| Revenue growth (5y CAGR) | 9.2% | 9.4% |
| Net margin | 21.5% | 15.4% |
| Return on equity | 39.5% | 27.2% |
| P/E ratio | 17.9 | 20.5 |
| Dividend yield | 1.0% | 2.2% |
| Profitable years (of last 10) | 10 | 10 |
| Positive free cash flow | Yes | Yes |
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See the full AON vs MRSH breakdown
Both companies across 19 years of income statement, balance sheet and cash flow — with ratios, health checks and Ask, the SEC-grounded research assistant. Free, no account needed.
Open AON's full financials → Open MRSH's full financials →More comparisons
Frequently asked questions
Which is bigger, AON or MRSH?
Marsh & McLennan Companies, Inc. is larger by market capitalization — $79.1B versus $69.8B.
Which grows faster, AON or MRSH?
Over the last five fiscal years, Marsh & McLennan Companies, Inc. grew revenue faster — 9.4%/yr versus 9.2%/yr, computed from SEC-filed statements.
Where does this data come from?
All figures are computed from official SEC filings (10-K), refreshed nightly. This is a data comparison, not investment advice.