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Aon plc (AON) Market Cap & Valuation Ratios

Aon plc (AON) has a market cap of $64.4B, a trailing P/E of 16.7 and a price-to-sales ratio of 3.7, with earnings according to EquiReason's reading of its SEC filings.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

Insurance Brokers · Financials
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Price chart with a free account
Market cap
64.4B
P/E TTM
16.7
Dividend yield
1.0%
52-week
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Next earnings
29 Oct, in 5 days

Peers

insurance brokers · nearest by market cap · trailing 12 months
CompanyMkt cap, $BP/EEV/SalesEV/EBITDAFCF yieldRev. growthOp. marginROIC
AON6416.74.414.1—+5%26%15%
MRSH9423.64.016.1—+8%21%14%
AJG6944.55.1——+26%——
WTW3020.13.513.1—+3%22%15%
BRO2423.04.6——+34%——
ERIE12—2.814.4—+4%18%29%
HGTY5.4—3.7——+5%——
BWIN4.5—3.997.5—+19%-7%-5%
ARX4.3—2.5——+55%——
CRVL4.237.34.0——+7%——
NP3.991.520.857.7—+34%41%—
Median of these 1030.43.916.1—+13%21%14%

P/E 16.7 vs. a peer median of 30.4; EV/Sales 4.4 vs. 3.9. AON's own P/E sits at the 3rd percentile of its history.

Growth vs. price

each dot a company · hover or tap for values
1020501000%+10%+20%+30%revenue growth, TTM →P/E (log)AONMRSHAJGWTWBROCRVLNP

ERIE and HGTY and BWIN and ARX have no P/E (earnings not positive) and are left out · hover or tap a dot for values.

Aon plc — questions

What is Aon plc's market cap?
$64.4B.
What is Aon plc's P/E ratio?
16.7 on trailing twelve-month earnings to 2026-06-30.
What is Aon plc's price-to-sales ratio?
3.7.

Every figure on this page comes from Aon plc's own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.