Aon (AON) Stock Analysis

July 23, 2026

This is a peer-relative look at Aon (AON): its performance, risk, profitability, growth, financial strength, dividend, and valuation are each measured against its Insurance peers, so every number reads in context rather than in isolation.

Company Profile

Company profile fields for Aon (AON)
Profile Item	AON
Name	Aon plc
Country/Region	Ireland
GICS Sector	Financials
GICS Industry Group	Insurance
GICS Industry	Insurance
GICS Sub-Industry	Insurance Brokers
Market Capitalization	76.76 billion USD
Currency	USD
Exchange	NYSE
Listing Date	June 2, 1980
Security Type	Common Stock

Price Performance

Cumulative Growth

AON

GSPC

Aon (AON) vs. S&P 500 (GSPC): Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Aon (AON) and S&P 500 (GSPC). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Aon (AON) and S&P 500 (GSPC). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
Total Return (1Y)	2.91%	19.00%
Total Return (3Y, Annualized)	2.49%	18.51%
Total Return (5Y, Annualized)	10.11%	11.89%

Risk Profile

Drawdown History

AON

GSPC

Aon (AON) vs. S&P 500 (GSPC): Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Aon (AON) and S&P 500 (GSPC). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
Volatility (1Y, Annualized)	25.34%	27.81%
Beta (5Y)	0.69	0.52
Max Drawdown (5Y)	-25.38%	-37.87%

Risk-Adjusted Performance

Risk-Return Positioning

Each dot is a stock plotted by 1-year volatility (risk) and 1-year return. AON is highlighted; the dashed line is the Capital Allocation Line from the risk-free rate through the industry median — dots above it are stronger on a risk-adjusted basis.

Risk-Adjusted Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
Sharpe Ratio (1Y)	-0.04	0.49
Sortino Ratio (1Y)	-0.06	0.77

Profitability

ROE (TTM)

Aon (AON) posts ROE of 46.45%, above the industry benchmark range. Equity is being turned into profit at an exceptional rate, but very high ROE should still be checked against leverage, buybacks, and the size of the equity base.

AON

Insurance industry group

46.45%

Group distribution

AON: 46.45%
Max: 38.88%
Q3: 22.63%
Median: 14.77%
Q1: 9.95%
Min: -6.23%

Largest peers

AON: 46.45%
ALL: 45.22%
PGR: 34.94%
MRSH: 27.57%
TRV: 26.51%
CB: 15.43%
MFC: 12.56%

Where Aon (AON) stands on ROE within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

Net Margin (TTM)

Aon (AON) keeps 22.54% of revenue as net profit, putting net margin in the upper peer quartile. After operating costs, interest, and taxes, more of each sales dollar reaches shareholders than it does at most industry peers.

AON

Insurance industry group

22.54%

Group distribution

Max: 38.86%
AON: 22.54%
Q3: 19.36%
Median: 11.21%
Q1: 5.05%
Min: -2.80%

Largest peers

AON: 22.54%
MFC: 20.04%
CB: 18.53%
ALL: 17.81%
TRV: 16.95%
MRSH: 14.26%
PGR: 12.85%

Where Aon (AON) stands on net margin within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

Operating Margin (TTM)

operating margin is set aside for Aon (AON) in Insurance: the operating-income line is not a clean boundary for this business model, so net margin, ROE, FFO, or industry-specific measures may be more useful.

Profitability Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
ROE (TTM)	46.45%	14.77%
ROA (TTM)	6.05%	2.80%
Net Margin (TTM)	22.54%	11.21%
Operating Margin (TTM)	--	--
Gross Margin (TTM)	--	--

Growth

Revenue Growth

Aon (AON) grew revenue 9.45%, roughly around the peer group's normal range. Top-line momentum looks broadly typical for the industry.

Aon (AON): Revenue Growth across different time periods, set against Insurance industry-group medians.

EPS Growth

Aon (AON) grew earnings per share 36.27%, roughly around the peer group's normal range. Bottom-line momentum looks broadly typical for the industry.

Aon (AON): EPS Growth across different time periods, set against Insurance industry-group medians.

Growth Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
Revenue Growth (YoY)	9.45%	8.15%
Revenue Growth (3Y CAGR)	11.25%	11.40%
EPS Growth (YoY)	36.27%	21.77%
EPS Growth (3Y CAGR)	11.92%	18.46%

Financial Strength

Current Ratio (MRQ)

current ratio is set aside for Aon (AON) in Insurance: these balance sheets are not best read through a current/non-current split, so regulatory, funding, or liquidity-coverage measures usually matter more.

Debt / Equity (MRQ)

debt-to-equity ratio is set aside for Aon (AON) in Insurance: leverage is part of the business model itself, so capital adequacy, funding mix, and regulatory measures are usually better risk gauges.

Financial Strength Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
Current Ratio (MRQ)	--	--
Debt / Equity (MRQ)	--	--
Net Debt / EBITDA	--	--

Dividends

Dividend Yield (TTM)

Aon (AON) has dividend yield of 0.82%, in the industry’s normal income range. It provides a meaningful dividend without the red flag of an unusually high headline yield.

AON

Insurance industry group

0.82%

Group distribution

Max: 5.19%
Q3: 2.46%
Median: 1.13%
AON: 0.82%
Q1: 0.00%
Min: 0.00%

Largest peers

MFC: 4.25%
ALL: 1.61%
TRV: 1.23%
CB: 1.10%
AON: 0.82%
PGR: 0.09%
MRSH: 0.00%

Where Aon (AON) stands on dividend yield within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

Dividend Payout Ratio (TTM)

Aon (AON) has payout ratio of 16.36%, within the industry’s typical payout band. The dividend shares profits with investors while leaving earnings coverage that looks normal for the peer group.

AON

Insurance industry group

16.36%

Group distribution

Max: 86.52%
Q3: 35.84%
AON: 16.36%
Median: 15.02%
Q1: 0.00%
Min: 0.00%

Largest peers

PGR: 69.74%
MFC: 52.02%
MRSH: 43.94%
AON: 16.36%
CB: 13.72%
TRV: 12.23%
ALL: 9.03%

Where Aon (AON) stands on payout ratio within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

Dividend Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
Dividend Yield (TTM)	0.82%	1.13%
Dividend Payout Ratio (TTM)	16.36%	15.02%

Valuation

P/E Ratio (TTM)

Aon (AON) trades at P/E ratio of 19.92, in the richer earnings-multiple quartile for its industry. That premium needs support from growth, durable earnings, or stronger business quality.

AON

Insurance industry group

19.92

Group distribution

Max: 30.58
AON: 19.92
Q3: 17.84
Median: 13.24
Q1: 9.20
Min: 3.32

Largest peers

MRSH: 22.78
AON: 19.92
MFC: 17.41
CB: 12.47
PGR: 10.65
TRV: 9.90
ALL: 5.62

Where Aon (AON) stands on P/E ratio within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

P/S Ratio (TTM)

Aon (AON) trades at 4.39 on P/S ratio, in the higher sales-valuation quartile. Investors are paying up for each dollar of revenue, so stronger margins, growth, or revenue quality need to carry that price.

AON

Insurance industry group

4.39

Group distribution

Max: 4.61
AON: 4.39
Q3: 2.41
Median: 1.30
Q1: 0.91
Min: 0.10

Largest peers

AON: 4.39
MRSH: 3.15
CB: 2.26
MFC: 2.23
TRV: 1.57
PGR: 1.32
ALL: 0.95

Where Aon (AON) stands on P/S ratio within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

P/B Ratio (MRQ)

Aon (AON) trades at 7.81 on P/B ratio, above the industry benchmark range. Investors are putting an unusually rich price on each dollar of book equity relative to peers.

AON

Insurance industry group

7.81

Group distribution

AON: 7.81
Max: 4.80
Q3: 2.68
Median: 1.83
Q1: 1.26
Min: -0.14

Largest peers

AON: 7.81
MRSH: 6.01
PGR: 3.49
TRV: 2.33
ALL: 2.19
MFC: 2.05
CB: 1.87

Where Aon (AON) stands on P/B ratio within its Insurance peer group — the box is the group’s distribution and the dots its largest members.

Valuation Metrics

Aon (AON) metric values compared with Insurance industry-group medians
Metric	Current stock: AON	Industry group median
P/E Ratio (TTM)	19.92	13.24
P/S Ratio (TTM)	4.39	1.30
P/B Ratio (MRQ)	7.81	1.83
Free Cash Flow Yield (TTM)	--	--