Which has the lower trailing P/E, AON or MCO?

AON has the lower trailing P/E: AON trades at 20.15 and MCO at 30.84. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, AON or MCO?

Over the past five years, AON grew revenue faster — AON at a 8.99% CAGR versus MCO at 7.07%.

Does AON or MCO pay a bigger dividend?

AON yields 0.83% and MCO yields 0.81% based on trailing dividends and the latest price.

Is AON or MCO more profitable?

MCO runs the higher net margin — AON at 22.54% versus MCO at 34.25%.

How have AON and MCO total returns compared?

Over the past 10 years, AON delivered 14.11% and MCO delivered 17.55% annualized total return. Past performance doesn't predict future results.

Aon plc (AON) vs Moody's Corporation (MCO)

A side-by-side comparison of Aon plc and Moody's Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of July 28, 2026. Differences are shown without an overall score or investment verdict.

AON

Aon plc

$81.43B

$381.26Financial ServicesDelayed quote: Jul 28, 2026, 4:00 PM EDT

MCO

Moody's Corporation

$83.86B

$484.20Financial ServicesDelayed quote: Jul 28, 2026, 4:00 PM EDT

Total return — AON vs MCO

growth of $100 · dividends reinvested · last 30y

AON +2715.6%MCO +10625.2%MCO compounded faster

AON MCO

AON vs MCO: by the numbers

•MCO is the larger company ($83.86B vs $81.43B market cap).
•AON trades at the lower trailing earnings multiple (20.15 vs 30.84 P/E), one valuation lens rather than an overall verdict.
•MCO converts more revenue to profit (34.25% vs 22.54% net margin).
•AON grew revenue faster over the past five years (8.99% vs 7.07% CAGR).
•AON pays the higher dividend yield (0.83% vs 0.81%).

Metrics side by side

Valuation

Metric	AON	MCO
P/E ratio	20.15	30.84
Forward P/E	19.20	28.75
P/S ratio	4.52	10.48
P/B ratio	8.04	28.26
PEG ratio	0.56	1.75

Profitability

Metric	AON	MCO
Gross margin	47.70%	71.94%
Operating margin	27.56%	45.10%
Net margin	22.54%	34.25%
ROE	40.09%	92.40%
ROIC	12.16%	21.00%

Dividends

Metric	AON	MCO
Dividend yield	0.83%	0.81%
Payout ratio	17.83%	28.70%

Growth (annualized)

Metric	AON	MCO
Revenue CAGR (5Y)	8.99%	7.07%
EPS CAGR (5Y)	15.07%	7.69%
Total return CAGR (5Y)	8.41%	6.03%

Frequently asked

Which has the lower trailing P/E, AON or MCO?: AON has the lower trailing P/E: AON trades at 20.15 and MCO at 30.84. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, AON or MCO?: Over the past five years, AON grew revenue faster — AON at a 8.99% CAGR versus MCO at 7.07%.
Does AON or MCO pay a bigger dividend?: AON yields 0.83% and MCO yields 0.81% based on trailing dividends and the latest price.
Is AON or MCO more profitable?: MCO runs the higher net margin — AON at 22.54% versus MCO at 34.25%.
How have AON and MCO total returns compared?: Over the past 10 years, AON delivered 14.11% and MCO delivered 17.55% annualized total return. Past performance doesn't predict future results.

Go deeper

Full AON analysis Full MCO analysis Interactive comparison tool

Dig into the metrics

Aon P/E ratio Moody's P/E ratio Aon dividend yield Moody's dividend yield Aon ROE Moody's ROE Aon operating margin Moody's operating margin Aon revenue growth Moody's revenue growth Aon free cash flow Moody's free cash flow

Aon & Moody's appear in these rankings

Highest ROE Stocks Highest ROIC Stocks Highest Operating Margin Stocks Highest FCF Yield Stocks

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified July 28, 2026.