What is Aon plc's shares (diluted)?

Aon plc (AON) reported shares (diluted) of 215.4M in Q1 2026.

How has Aon plc's shares (diluted) changed year-over-year?

Aon plc's shares (diluted) decreased by 1.1% year-over-year, from 217.9M to 215.4M.

What is the long-term trend for Aon plc's shares (diluted)?

Over 4 years (2021 to 2025), Aon plc's shares (diluted) has grown at a -1.1% compound annual growth rate (CAGR), from 907.6M to 869M.

What does shares (diluted) mean?

The weighted-average shares outstanding plus all potentially dilutive shares from stock options, RSUs, convertible securities, and warrants, using the treasury stock method.

Aon plc AON Shares (Diluted)

Shares (Diluted) at other companies

MarshMRSH

486M-1.8%

CBIZCBZ

61.5M-4.1%

Willis Towers WatsonWTW

96M-5.0%

Goosehead Insurance, Inc.GSHD

36.6M+41.2%

The Baldwin Insurance Group, Inc.BWIN

96.8M+39.7%

Brown & BrownBRO

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Other financials

Income statement

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Revenue$5.0B+6.4%

Operating income$1.7B+17.4%

Net income$1.2B+25.6%

EPS (diluted)$5.63+27.1%

Balance sheet

See full

Cash & equivalents$1.2B+22.2%

Total debt$15.3B-16.5%

Total equity$9.8B+40.4%

Total assets$51.4B+2.2%

Cash flow

See full

Operating cash flow$430.0M+207%

CapEx$67.0M+19.6%

Free cash flow$363.0M+332%

Valuation

See full

Market cap$70.84B0.0%

Enterprise value$84.96B-3.1%

P/E18×-9.2×

P/S4.1×-0.2×

Profitability

See full

Operating margin26.3%+2.9pp

Net margin22.5%+7.0pp

FCF margin20%+3.9pp

Returns & leverage

See full

Return on equity46.8%—

Debt / equity1.6×-1.1×

Current ratio1.1×0.0×

Where this comes from

Reported directly by Aon plc in its filing.

Tagged under the XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding.

The official record: Aon plc’s 10-Q, filed May 1, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is Aon plc's shares (diluted)?: Aon plc (AON) reported shares (diluted) of 215.4M in Q1 2026.
How has Aon plc's shares (diluted) changed year-over-year?: Aon plc's shares (diluted) decreased by 1.1% year-over-year, from 217.9M to 215.4M.
What is the long-term trend for Aon plc's shares (diluted)?: Over 4 years (2021 to 2025), Aon plc's shares (diluted) has grown at a -1.1% compound annual growth rate (CAGR), from 907.6M to 869M.
What does shares (diluted) mean?: The weighted-average shares outstanding plus all potentially dilutive shares from stock options, RSUs, convertible securities, and warrants, using the treasury stock method.