AJG vs AON Stock Comparison

Arthur J. Gallagher and Aon Prices as of Oct 23, 2026 Peers: Industry group
AJG Arthur J. Gallagher & Co.
$268.07 +16.8% 1M -5.1% 1Y
Market cap
$68.19B
P/E
43.4x
Revenue (TTM)
$15.75B
Div. yield
0.01%
Insurance Brokers Financial Services
4 wins
AON Aon plc
$303.56 +7.8% 1M -11.1% 1Y
Market cap
$64.14B
P/E
16.4x
Revenue (TTM)
$17.58B
Div. yield
0.01%
Insurance Brokers Financial Services
8 wins

Head to Head

12 decided of 12

Aon leads on 8 of the 12 questions below (Aon 8, Arthur J. Gallagher 4). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAJGAONLeader
Larger companyMarket capitalisation $68.19B $64.14B AJG
Cheaper on earningsLower P/E, profitable companies only 43.4x 16.4x AON
Cheaper on forward earningsLower price / next fiscal year consensus EPS 19.5x 16.7x AON
Faster revenue growthRevenue growth, trailing twelve months +26.3% +4.9% AJG
More profitableNet margin, trailing twelve months 10.0% 22.3% AON
Better return on capitalReturn on invested capital 5.7% 14.8% AON
Less leveragedLower net debt / EBITDA 3.0x 2.5x AON
Higher dividend yieldTrailing dividend yield 0.01% 0.01% AON
Better 1-year returnPrice return, last 12 months -5.1% -11.1% AJG
Better 5-year returnAnnualised price return, 5 years +10.2%/yr -1.1%/yr AJG
Less volatileAnnualised volatility, 1 year 32.6% 29.2% AON
Higher overall scoreMean of the five percentile scores vs peers 25/100 41/100 AON

Percentile Scorecard

AJGAON

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisAJGAON
Valuation 5 #113 of 119 11 #106 of 119
Growth 47 #62 of 117 47 #63 of 117
Profitability 35 #77 of 117 87 #16 of 117
Financial Health 10 #106 of 118 7 #110 of 118
Shareholder Returns 27 #79 of 108 53 #51 of 108
Overall 25 41
  • AJG ranked among 126 companies in Insurance
  • AON ranked among 126 companies in Insurance

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodAJGAONSPY
1 month +16.8%+7.8% -1.0%
3 months +8.2%-16.1% +2.9%
6 months +24.5%-5.5% +6.4%
Year to date +3.6%-14.0% +11.4%
1 year -5.1%-11.1% +13.1%
3 years +15.9%-5.1% +79.4%
3 years, per year +5.1%-1.7% +21.5%
5 years +62.3%-5.4% +67.7%
5 years, per year +10.2%-1.1% +10.9%
10 years +447.4%+177.1% +255.2%
10 years, per year +18.5%+10.7% +13.5%

Risk

MeasureAJGAONSPY
Volatility, 1Y 32.6%29.2% 12.7%
Downside volatility, 1Y 32.9%30.9% 12.7%
Beta vs S&P 500, 1Y -0.38-0.31 1.00
Return / volatility, 1Y -0.16-0.38 1.03
Max drawdown, 5Y -44.9%-34.2% -25.4%
From 52-week high -5.1%-20.3% -2.5%
52-week high $282.49$381.11 $779.14
52-week low $192.00$269.45 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleAJGAON
P/E now vs peer median 43.8xmedian 10.5x 16.5xmedian 10.5x
P/S now vs peer median 4.4xmedian 1.4x 3.7xmedian 1.4x
EV/EBITDA now vs peer median 20.3xmedian 8.0x 14.1xmedian 8.0x
P/FCF now vs peer median 30.1xmedian 8.4x 19.8xmedian 8.4x
P/B now vs peer median 2.9xmedian 1.5x 6.6xmedian 1.5x
PEG now vs peer median 7.17median 0.47 1.36median 0.47

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsAJGAON
Revenue $15.75B $17.58B
Operating income – $4.65B
Net income $1.57B $3.99B
Free cash flow $2.29B $3.25B
EPS (diluted) $6.07 $18.30
Cash & equivalents $1.39B $1.06B
Total debt $27.42B $63.71B
Shares (diluted) 258.70M 213.90M
Enterprise value $62.59B $57.35B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricAJGAON
P/E 43.8x 16.5x
P/FCF 30.1x 19.8x
P/Operating cash flow 28.1x 18.2x
P/S 4.4x 3.7x
P/B 2.9x 6.6x
P/Tangible book 5.1x 16.0x
EV/EBITDA 20.3x 14.1x
EV/EBIT 30.7x 16.8x
EV/Revenue 5.1x 4.4x
EV/FCF 35.4x 24.0x
EV/Operating cash flow 33.0x 22.1x
PEG (3Y EPS CAGR) 7.17 1.36

Growth

14 metrics
MetricAJGAON
Revenue growth (1Y) 26.3% 4.9%
Revenue CAGR (3Y) 19.6% 10.9%
Gross profit growth (1Y) – –
Gross profit CAGR (3Y) – –
Operating income growth (1Y) – 15.4%
Operating income CAGR (3Y) – 5.9%
Net income growth (1Y) -4.5% 49.7%
Net income CAGR (3Y) 12.2% 13.4%
EPS growth (1Y) -3.8% 52.8%
EPS CAGR (3Y) 6.1% 12.2%
Operating cash flow growth (1Y) 15.4% 12.1%
Operating cash flow CAGR (3Y) 13.2% 3.1%
Free cash flow growth (1Y) 15.8% 11.5%
Free cash flow CAGR (3Y) 14.8% 3.3%

Profitability

14 metrics
MetricAJGAON
Gross margin – –
EBITDA margin 25.2% 31.6%
Operating margin – 26.5%
Pretax margin 12.6% 28.9%
Net margin 10.0% 22.3%
FCF margin 14.5% 18.5%
Operating cash flow margin 15.5% 20.1%
Return on equity 6.6% 40.6%
Return on assets 2.0% 7.6%
Return on invested capital 5.7% 14.8%
Return on capital employed 7.1% 18.5%
Asset turnover 0.2x 0.3x
Cash conversion (OCF / net income) 1.6x 0.9x
Stock comp / revenue 1.0% 2.1%

Financial Health

11 metrics
MetricAJGAON
Debt / assets 16.5% 28.1%
Debt / equity 0.6x 1.5x
Net debt / EBITDA 3.0x 2.5x
Debt / FCF 5.9x 4.6x
Liabilities / assets 71.0% 81.8%
Equity / assets 29.0% 18.2%
Interest coverage 4.1x 6.2x
Current ratio 1.1x 1.0x
Quick ratio 0.2x 0.3x
Cash ratio 0.0x 0.0x
Altman Z-score 1.15 1.52

Shareholder Returns

7 metrics
MetricAJGAON
Dividend yield 1.0% 1.0%
Net buyback yield 0.4% 2.4%
Shareholder yield 1.4% 3.4%
Payout ratio (earnings) 44.0% 16.5%
Payout ratio (FCF) 30.3% 20.3%
Dividend growth (1Y) 16.3% 9.5%
Dividend CAGR (3Y) 15.4% 11.5%

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusAJGAON
Forward P/E 19.5xFY2026 16.7xFY2026
EPS, next fiscal year $13.76FY2026 $18.15FY2026
EPS growth, next FY +28.7%FY2026 +6.3%FY2026
EPS growth, the year after +13.3% +8.1%
Revenue, next fiscal year $17.07BFY2026 $19.12BFY2026
Revenue growth, next FY +23.9%FY2026 +11.3%FY2026
Revenue growth, the year after +0.7% +8.7%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAJGAON
Held by institutions 93.0% 90.5%
Institutions holding 1,290 1,254
Change in shares held, QoQ +4.0% +3.1%
Institutions buying 621 603
Institutions selling 483 448
Buyers to sellers 1.29 1.35

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

AJGAON
AJG 1.00 0.76
AON 0.76 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AJG and AON?

Arthur J. Gallagher (AJG) is the largest by market capitalisation: Arthur J. Gallagher (AJG) $68.19B, Aon (AON) $64.14B.

Which stock is cheaper, AJG and AON?

Aon (AON) trades on the lowest price-to-earnings ratio (Arthur J. Gallagher (AJG) 43.4x, Aon (AON) 16.4x). On next year's consensus earnings, Aon (AON) is cheapest (Arthur J. Gallagher (AJG) 19.5x, Aon (AON) 16.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Arthur J. Gallagher (AJG) grew revenue fastest over the trailing twelve months: Arthur J. Gallagher (AJG) +26.3%, Aon (AON) +4.9%.

Which company is more profitable?

Aon (AON) has the highest net margin (Arthur J. Gallagher (AJG) 10.0%, Aon (AON) 22.3%). On return on invested capital, Aon (AON) leads (Arthur J. Gallagher (AJG) 5.7%, Aon (AON) 14.8%).

Which stock has performed better?

Over the past year Arthur J. Gallagher (AJG) returned the most: Arthur J. Gallagher (AJG) -5.1%, Aon (AON) -11.1%. Over five years, Arthur J. Gallagher (AJG) compounded fastest (Arthur J. Gallagher (AJG) +10.2%/yr, Aon (AON) -1.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Aon (AON) has the highest dividend yield: Arthur J. Gallagher (AJG) 0.01%, Aon (AON) 0.01%.

Which stock is riskier?

By one-year price volatility, Aon (AON) has been the steadiest (Arthur J. Gallagher (AJG) 32.6%, Aon (AON) 29.2%). Volatility measures how widely the price swings, not the risk of the business.

Do AJG and AON move together?

Their daily returns over the past year have a correlation of 0.76, a strong positive relationship. Holding both adds little diversification.

Which is the better stock, AJG and AON?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Aon (AON) leads on 8. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.