Aon (AON) Growth Rank: 10 (As of Sep. 08, 2026) — 11% Above Median

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

AON Aon PLC AON
92 GF Score
Price $318.62
GF Value $393.00
Valuation Modestly Undervalued
! 1 Warning Sign
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What is Aon Growth Rank?

Aon AON -1.38% 92 Growth Rank is 10 as of Sep. 08, 2026, which is 11% above its 10-year median of 9.00. GuruFocus rates AON with a GF Score™ of 92/100 and a GF Value™ of $393.00 (Modestly Undervalued). The stock has 1 warning sign investors should review.

Aon has the Growth Rank of 10.

GuruFocus Growth Rank measures the growth of a company in terms of its revenue and profitability, rated on a scale from 1 to 10. Historically, the companies with the highest growth ranks performed the best over the long term. It is calculated using the following criteria:

1. 5-year revenue growth rate, the higher, the better.
2. 3-year revenue growth rate, the higher, the better.
3. 5-year EBITDA growth rate, the higher, the better.
4. The predictability of 5-year revenue. The most consistent it is, the higher the rank.

A higher score reflects a greater ability to drive business growth, with companies considered to have strong and sustainable expansion potential. Conversely, a lower score indicates challenges in achieving consistent growth and scalability.

GuruFocus found that the Growth Rank is the second of the two most-sensitive parameters among the five parameters checked. Please click GF Score to see more details on GF Score's 5 Key Aspects of Analysis.

Please note that we are using the five-year EBITDA growth rate as a parameter, so the company needs to have had positive growth over that time. The reason we use EBITDA instead of earnings per share is that with EBITDA, we can rank a lot more companies since a company may have positive EBITDA but negative EPS. Since we are looking at the growth here, EBITDA gives us a pretty clear picture about the growth in the company's business operations.

AON vs AJG, MRSH, WTW: Growth Rank Comparison

For the Insurance Brokers subindustry, Aon's Growth Rank, along with its competitors' market caps and Growth Rank data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

Aon Growth Rank vs Insurance Industry

For the Insurance industry and Financial Services sector, Aon's Growth Rank distribution charts can be found below:

* The bar in red indicates where Aon's Growth Rank falls into.


AON
92GF Score
Aon PLC AON
Growth Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about Growth Rank →
What does a Growth Rank of 10 mean?
Aon (AON) has a Growth Rank of 10 as of Sep. 08, 2026. Growth Rank measures the growth of a company in terms of its revenue and profitability. View historical data on Aon and its competitors. This is 11% above median its historical median of 9.00. Over the past decade, Aon's Growth Rank has ranged from 4.00 to 10.00.
Is Aon's Growth Rank too high?
Aon's current Growth Rank of 10 is 11% above median its 10-year median of 9.00. Over the past 10 years, this metric has ranged from a low of 4.00 to a high of 10.00. Overall, Aon has a GF Score™ of 92/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Aon's Growth Rank compare to AJG and MRSH?
Aon's Growth Rank of 10 can be compared against companies in the Insurance industry. Historically, Aon's own Growth Rank has ranged from 4.00 to 10.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Growth Rank for an Insurance company?
A good Growth Rank depends on the Insurance industry context. However, Growth Rank should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Growth Rank mean?
A high Growth Rank can signal that a stock is expensive relative to its fundamentals. Growth Rank measures the growth of a company in terms of its revenue and profitability. View historical data on Aon and its competitors. Aon's current Growth Rank is 10, which is 11% above median its own 10-year median of 9.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aon stock overvalued right now?
Based on GuruFocus' analysis, Aon (AON) is currently considered Modestly Undervalued. The stock's GF Value™ is $393.00, compared to a current price of $318.62 — trading 18.9% below its estimated fair value. The current Growth Rank is 10, which is 11% above median its 10-year median of 9.00. Aon's overall GF Score™ is 92/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Growth Rank calculated?
Growth Rank is calculated from a company's financial statements. For Aon (AON), the current Growth Rank is 10 as of Sep. 08, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Aon (AON) Overvalued in 2026?

Based on GuruFocus' analysis, Aon stock appears to be undervalued. The current stock price of $318.62 is trading 18.9% below its estimated GF Value™ of $393.00. GuruFocus considers Aon to be Modestly Undervalued.

Key valuation signals for AON:

  • Growth Rank: 10 (11% above median its 10-year median of 9.00)
  • GF Value™: $393.00 vs. price of $318.62 (18.9% below fair value)
  • GF Score™: 92/100 with 1 warning sign

No single metric tells the full story. See the AON stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Aon Business Description

Address 15 George\'s Quay, Dublin 2, Dublin, IRL, D02 VR98
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 60,000 employees and operations in over 120 countries.
92GF Score

Get the complete analysis for AON

Growth Rank is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$318.62
Price
$393.00
GF Value