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Aon Valuation Multiples

Discover revenue and EBITDA valuation multiples for Aon and similar public comparables like Marsh McLennan, Marsh, Arthur J. Gallagher, Willis Towers Watson and more.

Aon Overview

About Aon

Aon is a leading global provider of insurance and reinsurance brokerage and human resources solutions. Its operations are tilted toward its brokerage operations. Headquartered in London, Aon has about 50,000 employees and operations in over 120 countries.


Founded

1979

HQ

United States

Employees

60.0K

Website

aon.com

Financials (LTM)

Revenue: $17B
EBITDA: $6B

EV

$81B

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Aon Financials

Aon reported last 12-month revenue of $17B and EBITDA of $6B.

In the same LTM period, Aon generated $6B in EBITDA and $4B in net income.

Revenue (LTM)


Aon P&L

In the most recent fiscal year, Aon reported revenue of $17B and EBITDA of $7B.

Aon is profitable as of last fiscal year, with gross margin of 48%, EBITDA margin of 38%, and net margin of 22%.

See analyst estimates for Aon
LTMLast FY202320242025202620272028
Revenue$17B$17B$13B$16B$17B
Gross Profit—$8B$6B$7B$8B
Gross Margin—48%48%47%48%
EBITDA$6B$7B$4B$5B$7B
EBITDA Margin34%38%29%31%38%
EBIT Margin33%32%29%27%27%
Net Profit$4B$4B$3B$3B$4B
Net Margin22%22%19%17%22%
Net Debt—$14B———

Financial data powered by Morningstar, Inc.

Aon Stock Performance

Aon has current market cap of $67B, and enterprise value of $81B.

Market Cap Evolution


Aon's stock price is $312.79.

Aon share price increased by 0.4% in the last 30 days, and decreased by 15.9% in the last year.

Aon has an EPS (earnings per share) of $17.35.

See more trading valuation data for Aon
EVMarket CapPrice 1DPrice 1MPrice 3MPrice 12MEPS
$81B$67B0.0%0.4%-6.8%-15.9%$17.35

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Aon Valuation Multiples

Aon trades at 4.6x EV/Revenue multiple, and 13.8x EV/EBITDA.

See NTM and 2027E valuation multiples for Aon

EV / Revenue (LTM)


Aon Financial Valuation Multiples

As of May 11, 2026, Aon has market cap of $67B and EV of $81B.

Aon has a P/E ratio of 17.4x.

LTMLast FY202320242025202620272028
EV/Revenue4.6x4.7x6.0x5.2x4.7x
EV/EBITDA13.8x12.4x20.7x16.4x12.4x
EV/EBIT14.2x14.6x20.6x19.1x17.2x
EV/Gross Profit—9.9x12.5x10.9x9.9x
P/E17.4x18.0x26.1x25.2x18.1x
EV/FCF22.9x24.6x25.4x28.7x25.1x

Multiples above and below 250x are considered non-meaningful (n/m). Valuation data powered by FactSet, Inc. and Morningstar, Inc.

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Access all public comps and forward-looking valuation multiples like EV/Revenue in 2027, based on consensus analyst estimates. Powered by FactSet and Morningstar.

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Aon Margins & Growth Rates

Aon grew revenue by 5% but EBITDA decreased by 6% in the last fiscal year.

In the most recent fiscal year, Aon reported gross margin of 48%, EBITDA margin of 38%, and net margin of 22%.

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Aon Margins

Last FY202420252026202720282029
Gross Margin48%47%48%—
EBITDA Margin38%31%38%34%
EBIT Margin32%27%27%33%
Net Margin22%17%22%23%
FCF Margin19%18%19%22%

Aon Growth Rates

FY+1/FY23/2424/2525/2626/2727/2828/29
Revenue Growth5%17%9%5%
Gross Profit Growth—15%11%—
EBITDA Growth(6%)26%32%(6%)
EBIT Growth8%8%11%27%
Net Profit Growth10%4%39%11%
FCF Growth21%(11%)14%24%

Data powered by FactSet, Inc. and Morningstar, Inc.

Aon Operational KPIs

Aon's revenue per employee in the last FY averaged $0.3M, while opex per employee averaged $0.1M for the same period.

Aon's Rule of 40 is 39% (metric relevant for SaaS companies only, counted as combined revenue growth rate and EBITDA margin).

Aon's Rule of X is 47% (created by Bessemer, Rule of X is another metric to measure SaaS companies, ~1.5x stronger vs. the traditional Rule of 40, counted as revenue growth rate multiplied by 2.5 plus EBITDA margin).

Access forward-looking KPIs for Aon
LTMLast FY202320242025202620272028
Rule of 4039%39%———
Bessemer Rule of X47%47%———
Revenue per Employee—$0.3M———
Opex per Employee—$0.1M———
G&A Expenses to Revenue—11%13%13%11%
R&D Expenses to Revenue3%3%——3%
Opex to Revenue—20%19%20%20%

Data powered by FactSet, Inc. and Morningstar, Inc.

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Aon Competitors

Aon competitors include Marsh McLennan, Marsh, Arthur J. Gallagher, Willis Towers Watson, Brown & Brown, BB Seguros, CAIXA Seguridade, Primerica, Ryan Specialty and Steadfast Group.

Most Aon public comparables operate across Insurance Brokers.

EV/RevenueEV/EBITDA
Last FYLTM2027ELast FYLTM2027E
Marsh McLennan3.7x—13.4x—
Marsh3.7x3.6x13.1x12.7x
Arthur J. Gallagher4.5x4.2x13.9x13.0x
Willis Towers Watson3.0x2.9x11.1x10.7x
Brown & Brown4.4x4.1x12.4x11.7x
BB Seguros6.9x6.8x3.9x3.9x
CAIXA Seguridade9.6x9.1x11.4x10.7x
Primerica3.0x2.9x——

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Aon M&A Activity

Aon has acquired 15 companies to date.

Last acquisition by Aon was on November 26th 2024. Aon acquired Mitsubishi Chemical Group (in-house insurance agency unit) for undisclosed valuation.

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Latest Acquisitions by Aon

Mitsubishi Chemical Group (in-house insurance agency unit)
Griffiths & Armour
NFP
Global Insurance
Description
—
Griffiths & Armour is a London-headquartered insurance brokerage providing risk management for UK corporates in construction, engineering, and manufacturing sectors. The firm advises on liability, property, and directors' officers' insurance with access to Lloyd's of London markets.
NFP is a New York-headquartered insurance brokerage and consulting firm that delivers property and casualty coverage, corporate employee benefits, retirement plan administration, and personal wealth management solutions via licensed subsidiaries throughout the United States and Canada. The company partners with carriers like Chubb and Travelers to serve middle-market businesses and high-net-worth individuals. NFP operates over 200 offices nationwide and expanded internationally through acquisitions such as RT Specialty in Europe.
Global Insurance Brokers is a Mumbai-based composite broker licensed by IRDAI offering insurance, reinsurance, risk advisory, and claims management in India. The firm structures policies for corporate clients in manufacturing, IT, and logistics sectors. It negotiates with insurers like ICICI Lombard and New India Assurance for customized coverage.
HQ CountryJapanUnited KingdomUnited StatesIndia
HQ City
—
Liverpool
New York City, NY
Mumbai
Deal Date26 Nov 20241 Nov 202420 Dec 20234 Oct 2023
Valuationundisclosed$456M$13Bundisclosed
EV/Revenue
EV/EBITDA

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Aon Investment Activity

Aon has invested in 2 companies to date.

Latest investment by Aon was on March 25th 2026. Aon invested in eMed in their $200M Series A round (EV/Revenue multiple of ).

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Latest Investments by Aon

eMed
Rznomics
Description
eMed is a New York-based telehealth provider offering on-demand clinical trials and chronic care management programs for GLP-1 medications targeting obesity and type 2 diabetes. The platform connects patients with board-certified clinicians via app-based consultations and at-home biometric kits shipped nationwide. eMed partners with Novo Nordisk for Wegovy distribution and ensures 95 percent adherence through remote monitoring.
Rznomics Inc is engaged in research and development of biopharmaceuticals, developing gene therapy drugs based on RNA substitution enzyme platform and self-cycling RNA platform technologies, and commercializing them through technology transfer.
HQ CountryUnited StatesSouth Korea
HQ City
Miami, FL
Gwangju
Deal Date25 Mar 20268 Jun 2022
RoundSeries ASeries C
Raised$200M$29M
InvestorsAntonio Gracias; Aon; Ara Cohen; Jeff Aronin; Joe Lonsdale; Linda Yaccarino; R.J. Melman; Tom Brady; Tom RickettsAon; IBK Capital; Korea Development Bank; Partners Investment; Quad Ventures; SBI Investment KOREA; Shinhan Venture Investment; UTC Investment Co.
Valuation$2Bundisclosed
EV/Revenue
EV/EBITDA

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About Aon

When was Aon founded?Aon was founded in 1979.
Where is Aon headquartered?Aon is headquartered in United States.
How many employees does Aon have?As of today, Aon has over 60K employees.
Who is the CEO of Aon?Aon's CEO is Gregory C. Case.
Is Aon publicly listed?Yes, Aon is a public company listed on NYSE.
What is the stock symbol of Aon?Aon trades under AON ticker.
When did Aon go public?Aon went public in 1975.
Who are competitors of Aon?Aon main competitors include Marsh McLennan, Marsh, Arthur J. Gallagher, Willis Towers Watson, Brown & Brown, BB Seguros, CAIXA Seguridade, Primerica, Ryan Specialty, Steadfast Group.
What is the current market cap of Aon?Aon's current market cap is $67B.
What is the current revenue of Aon?Aon's last 12 months revenue is $17B.
What is the current revenue growth of Aon?Aon revenue growth (NTM/LTM) is 6%.
What is the current EV/Revenue multiple of Aon?Current revenue multiple of Aon is 4.6x.
Is Aon profitable?Yes, Aon is EBITDA-positive (as of the last 12 months).
What is the current EBITDA of Aon?Aon's last 12 months EBITDA is $6B.
What is Aon's EBITDA margin?Aon's last 12 months EBITDA margin is 34%.
What is the current EV/EBITDA multiple of Aon?Current EBITDA multiple of Aon is 13.8x.
What is the current FCF of Aon?Aon's last 12 months FCF is $4B.
What is Aon's FCF margin?Aon's last 12 months FCF margin is 20%.
What is the current EV/FCF multiple of Aon?Current FCF multiple of Aon is 22.9x.
How many companies Aon has acquired to date?As of May 2026, Aon has acquired 15 companies.
What was the largest acquisition by Aon?$13B acquisition of NFP on 20th December 2023 was the largest M&A Aon has done to date.
What companies Aon acquired?Aon acquired NFP, The Townsend Group, Griffiths & Armour, CoverWallet, Cytelligence, Balto Link, Modern Survey, Mitsubishi Chemical Group (in-house insurance agency unit), RPC Tyche, cut-e, and 5 other companies.
In how many companies Aon has invested to date?As of May 2026, Aon has invested in 2 companies.
What was the last Aon investment?On 25th March 2026 Aon invested in eMed, participating in a $200M Series A round at $2B valuation, alongside Antonio Gracias, Ara Cohen, Jeff Aronin, Joe Lonsdale, Linda Yaccarino, R.J. Melman, Tom Brady, and Tom Ricketts.
In what companies Aon invested in?Aon invested in eMed and Rznomics.

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