AON vs MCO
AON: Global professional services and risk advisory firm connecting clients with analytics-driven solutions across insurance, reinsurance, and human capital management. MCO: Global provider of credit ratings, analytics, and decision-grade data intelligence helping organizations navigate interconnected financial and operational risks.
Side-by-side fundamentals
| Metric | AON | MCO | Edge |
|---|---|---|---|
| Price as of 2026-07-15 close | $355.15 | $504.46 | |
| Market cap as of 2026-07-16 | $76.3B | $87.5B | |
| P/E as of 2026-07-16 | 19.36 | 35.07 | AON lower |
| PEG as of 2026-07-16 | 1.78 | 2.75 | AON lower |
| Net margin as of 2026-07-16 | +22.5% | +31.7% | MCO higher |
| Gross margin as of 2026-07-16 | +47.8% | +74.4% | MCO higher |
| Operating margin as of 2026-07-16 | +33.8% | +42.8% | MCO higher |
| ROE as of 2026-07-16 | +45.1% | +66.7% | MCO higher |
| ROA as of 2026-07-16 | +7.6% | +16.2% | MCO higher |
| Debt / equity as of 2026-07-16 | 1.49 | 2.33 | AON lower |
| Revenue growth (YoY) as of 2026-07-16 | +6.9% | +8.9% | MCO higher |
| Revenue CAGR (3y) SEC XBRL | +11.2% | +12.2% | MCO higher |
| Dividend yield as of 2026-07-16 | +0.9% | +0.8% | AON higher |
| Dividend streak (yrs) SEC XBRL | 4 | 5 | MCO higher |
| Beta as of 2026-07-16 | 0.69 | 1.34 | |
| 1-year return as of 2026-07-15 close | -0.3% | -1.7% | AON higher |
Fundamentals: Finnhub, as of 2026-07-16. Filings: SEC EDGAR. Prices are delayed daily-close data.
Last updated 2026-07-15.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & Finnhub, shown with their as-of date; "Edge" cells are a pure numeric comparison, not a recommendation.