What is AON's five-year median EV/EBITDA?

The median, or middle weekly reading, is 20.5× over the last five years. Available history contains 533 weekly observations from Aug 8, 2016 to Oct 19, 2026.

Does a low historical rank mean a stock is a buy?

No. The rank describes a stock’s own history. Changes in growth, financial risk and the business can change the multiple investors pay. P/E uses earnings and P/S uses revenue from the previous twelve months.

Aon plc (AON) valuation history

Historically low

As of Oct 22, 2026

AON's EV/EBITDA of 15.8x is lower than 98% of its available weekly readings from the last five years.

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EV/EBITDA at year-end

Last weekly reading of each completed year. Rank runs from lowest (0%) to highest (100%) within the five years available on that date.

AON year-end valuation history
Reading date	EV/EBITDA	5-year rank
Dec 29, 2025	20.4×	46%
Dec 30, 2024	25.1×	76%
Dec 25, 2023	16.7×	1%
Dec 26, 2022	19.0×	34%
Dec 27, 2021	35.5×	100%
Dec 28, 2020	18.8×	33%
Dec 30, 2019	20.6×	51%
Dec 31, 2018	17.2×	16%
Dec 25, 2017	21.6×	44%
Dec 26, 2016	Unavailable	Short history

Peers on the same measure

Stock	EV/EBITDA	5-year rank
AJGArthur J. Gallagher & Co.	Unavailable	Unranked
BROBrown & Brown	15.1×	7%
MRSHMarsh McLennan	17.1×	22%
WTWWillis Towers Watson	13.0×	25%

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Financials Stocks with Low P/E Ratios and Steady Revenue Growth Stocks Below Their 5-Year Median P/E Stocks Near Their Lowest P/E Ratios in 5 Years

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About this history

What is AON's current EV/EBITDA?: AON's EV/EBITDA of 15.8x is lower than 98% of its available weekly readings from the last five years.
What is AON's five-year median EV/EBITDA?: The median, or middle weekly reading, is 20.5× over the last five years. Available history contains 533 weekly observations from Aug 8, 2016 to Oct 19, 2026.
Does a low historical rank mean a stock is a buy?: No. The rank describes a stock’s own history. Changes in growth, financial risk and the business can change the multiple investors pay. P/E uses earnings and P/S uses revenue from the previous twelve months.