AON vs ERIE vs AJG Stock Comparison

Aon, Erie Indemnity and Arthur J. Gallagher Prices as of Nov 4, 2026 Peers: Industry group
AON Aon plc
$344.66 +26.7% 1M +0.1% 1Y
Market cap
$73.01B
P/E
18.6x
Revenue (TTM)
$17.68B
Div. yield
0.01%
Insurance Brokers Financial Services
5 wins
ERIE Erie Indemnity Co
$279.96 +26.4% 1M -3.3% 1Y
Market cap
$13.14B
P/E
22.8x
Revenue (TTM)
$4.12B
Div. yield
0.02%
Insurance Brokers Financial Services
2 wins
AJG Arthur J. Gallagher & Co.
$288.49 +26.9% 1M +14.6% 1Y
Market cap
$73.87B
P/E
37.2x
Revenue (TTM)
—
Div. yield
–
Insurance Brokers Financial Services
3 wins

Head to Head

10 decided of 12

Aon leads on 5 of the 12 questions below (Aon 5, Arthur J. Gallagher 3, Erie Indemnity 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAONERIEAJGLeader
Larger companyMarket capitalisation $73.01B $13.14B $73.87B AJG
Cheaper on earningsLower P/E, profitable companies only 18.6x 22.8x 37.2x AON
Cheaper on forward earningsLower price / next fiscal year consensus EPS 19.0x 23.4x 21.0x AON
Faster revenue growthRevenue growth, trailing twelve months +3.8% +2.0% — AON
More profitableNet margin, trailing twelve months 22.2% 14.0% — AON
Better return on capitalReturn on invested capital 11.6% — — –
Less leveragedLower net debt / EBITDA 2.3x — — –
Higher dividend yieldTrailing dividend yield 0.01% 0.02% 0.00% ERIE
Better 1-year returnPrice return, last 12 months +0.1% -3.3% +14.6% AJG
Better 5-year returnAnnualised price return, 5 years +3.6%/yr +4.5%/yr +12.5%/yr AJG
Less volatileAnnualised volatility, 1 year 29.7% 38.4% 32.5% AON
Higher overall scoreMean of the five percentile scores vs peers 38/100 48/100 27/100 ERIE

Percentile Scorecard

AONERIEAJG

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

AxisAONERIEAJG
Valuation 12 #105 of 119 14 #103 of 119 10 #107 of 119
Growth 44 #66 of 116 33 #78 of 116 –
Profitability 75 #30 of 116 81 #23 of 116 –
Financial Health 20 #95 of 118 83 #21 of 118 61 #47 of 118
Shareholder Returns 42 #64 of 109 31 #76 of 109 11 #97 of 109
Overall 38 48 27
  • AON ranked among 126 companies in Insurance
  • ERIE ranked among 126 companies in Insurance
  • AJG ranked among 126 companies in Insurance

Price Performance

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

Returns

PeriodAONERIEAJGSPY
1 month +26.7%+26.4%+26.9% -1.0%
3 months -4.2%+11.6%+15.0% -0.4%
6 months +11.8%+31.1%+46.5% +4.5%
Year to date -2.3%-2.3%+11.5% +12.4%
1 year +0.1%-3.3%+14.6% +13.6%
3 years +6.6%+0.6%+19.0% +76.4%
3 years, per year +2.2%+0.2%+6.0% +20.8%
5 years +19.5%+24.8%+80.0% +63.7%
5 years, per year +3.6%+4.5%+12.5% +10.4%
10 years +219.8%+176.9%+507.6% +267.7%
10 years, per year +12.3%+10.7%+19.8% +13.9%

Risk

MeasureAONERIEAJGSPY
Volatility, 1Y 29.7%38.4%32.5% 12.8%
Downside volatility, 1Y 30.9%39.0%32.0% 12.7%
Beta vs S&P 500, 1Y -0.25-0.48-0.33 1.00
Return / volatility, 1Y 0.00-0.090.45 1.06
Max drawdown, 5Y -34.2%-62.0%-44.9% -25.4%
From 52-week high -9.6%-6.6%0.0% -1.6%
52-week high $381.11$299.78$288.49 $779.14
52-week low $269.45$207.24$192.00 $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.

MultipleAONERIEAJG
P/E now vs peer median 18.6xmedian 11.1x 22.4xmedian 11.1x 37.2xmedian 11.1x
P/S now vs peer median 4.1xmedian 1.4x 3.1xmedian 1.4x 3.7xmedian 1.4x
EV/EBITDA now vs peer median 15.5xmedian 7.3x —median 7.3x —median 7.3x
P/FCF now vs peer median 22.4xmedian 9.0x 23.3xmedian 9.0x 25.6xmedian 9.0x
P/B now vs peer median 7.2xmedian 1.6x 5.1xmedian 1.6x 3.1xmedian 1.6x
PEG now vs peer median 1.61median 0.64 1.74median 0.64 —median 0.64

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 monthsAONERIEAJG
Revenue $17.68B $4.12B –
Operating income $4.65B $736.01M –
Net income $4.01B $576.14M –
Free cash flow $3.27B $554.04M –
EPS (diluted) $18.46 $226,647.13 –
Cash & equivalents $2.02B $362.69M $1.21B
Total debt $28.04B – –
Shares (diluted) 213.00M 2.54K 258.70M
Enterprise value $52.21B $11.67B $73.87B

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
MetricAONERIEAJG
P/E 18.6x 22.4x 37.2x
P/FCF 22.4x 23.3x 25.6x
P/Operating cash flow 20.5x 18.7x –
P/S 4.1x 3.1x 3.7x
P/B 7.2x 5.1x 3.1x
P/Tangible book 15.5x 5.1x 5.3x
EV/EBITDA 15.5x – –
EV/EBIT 18.5x 17.0x –
EV/Revenue 4.9x 3.0x –
EV/FCF 26.3x 22.6x –
EV/Operating cash flow 24.0x 18.1x –
PEG (3Y EPS CAGR) 1.61 1.74 –

Growth

14 metrics
MetricAONERIEAJG
Revenue growth (1Y) 3.8% 2.0% –
Revenue CAGR (3Y) 10.4% 9.4% –
Gross profit growth (1Y) – – –
Gross profit CAGR (3Y) – – –
Operating income growth (1Y) 9.9% 1.3% –
Operating income CAGR (3Y) 5.0% 15.7% –
Net income growth (1Y) 44.1% -11.1% –
Net income CAGR (3Y) 12.8% 12.9% –
EPS growth (1Y) 47.2% -11.1% –
EPS CAGR (3Y) 11.5% 12.9% –
Operating cash flow growth (1Y) 8.8% -2.4% –
Operating cash flow CAGR (3Y) 3.6% 24.2% –
Free cash flow growth (1Y) 7.4% -4.0% –
Free cash flow CAGR (3Y) 3.5% 26.7% –

Profitability

14 metrics
MetricAONERIEAJG
Gross margin – – –
EBITDA margin 31.2% – –
Operating margin 26.3% 17.9% –
Pretax margin 28.8% 17.8% –
Net margin 22.2% 14.0% –
FCF margin 18.5% 13.4% –
Operating cash flow margin 20.2% 16.8% –
Return on equity 40.3% 23.0% –
Return on assets 6.8% 16.0% –
Return on invested capital 11.6% – –
Return on capital employed 13.6% 28.3% –
Asset turnover 0.3x 1.1x –
Cash conversion (OCF / net income) 0.9x 1.2x –
Stock comp / revenue 2.1% – –

Financial Health

11 metrics
MetricAONERIEAJG
Debt / assets 43.0% – –
Debt / equity 2.7x – –
Net debt / EBITDA 2.3x – –
Debt / FCF 8.6x – –
Liabilities / assets 84.3% 30.3% 69.6%
Equity / assets 15.7% 69.7% 30.4%
Interest coverage 6.2x – –
Current ratio 1.6x 1.3x 1.1x
Quick ratio 0.8x 1.2x –
Cash ratio 0.6x 0.4x –
Altman Z-score 1.58 10.32 –

Shareholder Returns

7 metrics
MetricAONERIEAJG
Dividend yield 0.9% 2.1% 1.0%
Net buyback yield 1.8% – –
Shareholder yield 2.7% 2.1% 1.0%
Payout ratio (earnings) 16.8% 46.5% –
Payout ratio (FCF) 20.6% 48.4% –
Dividend growth (1Y) 9.4% 7.1% –
Dividend CAGR (3Y) 11.7% 7.1% –

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.

ConsensusAONERIEAJG
Forward P/E 19.0xFY2026 23.4xFY2026 21.0xFY2026
EPS, next fiscal year $18.15FY2026 $11.94FY2026 $13.76FY2026
EPS growth, next FY +6.3%FY2026 +11.7%FY2026 +28.7%FY2026
EPS growth, the year after +8.1% +33.9% +13.3%
Revenue, next fiscal year $19.12BFY2026 $4.09BFY2026 $17.07BFY2026
Revenue growth, next FY +11.3%FY2026 +0.4%FY2026 +23.9%FY2026
Revenue growth, the year after +8.7% +11.9% +0.7%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAONERIEAJG
Held by institutions 90.5% 45.2% 93.0%
Institutions holding 1,257 438 1,294
Change in shares held, QoQ +3.1% +4.5% +4.0%
Institutions buying 604 272 623
Institutions selling 450 112 485
Buyers to sellers 1.34 2.43 1.28

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.

AONERIEAJG
AON 1.00 0.57 0.79
ERIE 0.57 1.00 0.61
AJG 0.79 0.61 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AON, ERIE and AJG?

Arthur J. Gallagher (AJG) is the largest by market capitalisation: Aon (AON) $73.01B, Erie Indemnity (ERIE) $13.14B, Arthur J. Gallagher (AJG) $73.87B.

Which stock is cheaper, AON, ERIE and AJG?

Aon (AON) trades on the lowest price-to-earnings ratio (Aon (AON) 18.6x, Erie Indemnity (ERIE) 22.8x, Arthur J. Gallagher (AJG) 37.2x). On next year's consensus earnings, Aon (AON) is cheapest (Aon (AON) 19.0x, Erie Indemnity (ERIE) 23.4x, Arthur J. Gallagher (AJG) 21.0x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Aon (AON) grew revenue fastest over the trailing twelve months: Aon (AON) +3.8%, Erie Indemnity (ERIE) +2.0%.

Which company is more profitable?

Aon (AON) has the highest net margin (Aon (AON) 22.2%, Erie Indemnity (ERIE) 14.0%).

Which stock has performed better?

Over the past year Arthur J. Gallagher (AJG) returned the most: Aon (AON) +0.1%, Erie Indemnity (ERIE) -3.3%, Arthur J. Gallagher (AJG) +14.6%. Over five years, Arthur J. Gallagher (AJG) compounded fastest (Aon (AON) +3.6%/yr, Erie Indemnity (ERIE) +4.5%/yr, Arthur J. Gallagher (AJG) +12.5%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Erie Indemnity (ERIE) has the highest dividend yield: Aon (AON) 0.01%, Erie Indemnity (ERIE) 0.02%, Arthur J. Gallagher (AJG) 0.00%. Arthur J. Gallagher (AJG) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Aon (AON) has been the steadiest (Aon (AON) 29.7%, Erie Indemnity (ERIE) 38.4%, Arthur J. Gallagher (AJG) 32.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AON, ERIE and AJG?

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 5. 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.