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

STT has the lower trailing P/E: AON trades at 17.40 and STT at 16.94. P/E is one valuation measure and does not by itself establish which business is cheaper.

Which has grown faster, AON or STT?

Over the past five years, STT grew revenue faster — AON at a 8.37% CAGR versus STT at 14.50%.

Does AON or STT pay a bigger dividend?

AON yields 0.99% and STT yields 1.75% based on trailing dividends and the latest price.

Is AON or STT more profitable?

AON runs the higher net margin — AON at 22.27% versus STT at 15.04%.

How have AON and STT total returns compared?

Over the past 10 years, AON delivered 12.00% and STT delivered 13.72% annualized total return. Past performance doesn't predict future results.

Aon plc (AON) vs State Street Corporation (STT)

A side-by-side comparison of Aon plc and State Street Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of September 9, 2026. Differences are shown without an overall score or investment verdict.

AON

Aon plc

$64.63B

$304.69Financial ServicesDelayed quote: Sep 9, 2026, 4:00 PM EDT

STT

State Street Corporation

$53.11B

$191.89Financial ServicesDelayed quote: Sep 9, 2026, 4:00 PM EDT

Total return — AON vs STT

growth of $100 · dividends reinvested · last 10y

AON +211.9% (+12.0%/yr)STT +262.7% (+13.8%/yr)STT compounded faster over this window

AON STT

AON vs STT: by the numbers

•AON is the larger company ($64.63B vs $53.11B market cap).
•STT trades at the lower trailing earnings multiple (16.94 vs 17.40 P/E), one valuation lens rather than an overall verdict.
•AON converts more revenue to profit (22.27% vs 15.04% net margin).
•STT grew revenue faster over the past five years (14.50% vs 8.37% CAGR).
•STT pays the higher dividend yield (1.75% vs 0.99%).

Metrics side by side

Valuation

Metric	AON	STT
P/E ratio	17.40	16.94
Forward P/E	16.77	14.06
P/S ratio	3.86	2.36
P/B ratio	7.01	1.92

Profitability

Metric	AON	STT
Gross margin	47.70%	65.27%
Operating margin	27.21%	19.05%
Net margin	22.27%	15.04%
ROE	40.51%	12.23%

Dividends

Metric	AON	STT
Dividend yield	0.99%	1.75%
Payout ratio	17.25%	29.66%

Growth (annualized)

Metric	AON	STT
Revenue CAGR (5Y)	8.37%	14.50%
EPS CAGR (5Y)	15.07%	8.34%
Total return CAGR (5Y)	2.68%	20.83%

Frequently asked

Which has the lower trailing P/E, AON or STT?: STT has the lower trailing P/E: AON trades at 17.40 and STT at 16.94. P/E is one valuation measure and does not by itself establish which business is cheaper.
Which has grown faster, AON or STT?: Over the past five years, STT grew revenue faster — AON at a 8.37% CAGR versus STT at 14.50%.
Does AON or STT pay a bigger dividend?: AON yields 0.99% and STT yields 1.75% based on trailing dividends and the latest price.
Is AON or STT more profitable?: AON runs the higher net margin — AON at 22.27% versus STT at 15.04%.
How have AON and STT total returns compared?: Over the past 10 years, AON delivered 12.00% and STT delivered 13.72% annualized total return. Past performance doesn't predict future results.

Go deeper

Full AON analysis Full STT analysis Interactive comparison tool

Dig into the metrics

Aon P/E ratio State Street P/E ratio Aon dividend yield State Street dividend yield Aon ROE State Street ROE Aon operating margin State Street operating margin Aon revenue growth State Street revenue growth

Aon & State Street appear in these rankings

Highest ROE Stocks Highest FCF Yield Stocks Highest 10-Year Total Return 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 September 9, 2026.