Stock research

Aon plc (AON) Stock Research

Aon provides insurance and reinsurance brokerage plus risk, retirement, and health consulting.

For the fiscal year ended December 31, 2025, Aon plc reported revenue of $17.2B and net income of $3.7B, with operating cash flow of $3.5B. Source: Form 10-K filed February 13, 2026

SEC data as of

Revenue
$17.2B
FY ending 2025-12-31
Net income
$3.7B
FY ending 2025-12-31
Diluted EPS
$17.02
Net margin
21.5%

Reported SEC XBRL figures. Each metric’s period and original filing are listed below.

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About Aon

Exchange
NYSE: AON
Sector
Financials
SEC industry
Insurance Agents, Brokers & Service (SIC 6411)
Fiscal year end
December 31

AON key financials

Reported figures from Aon plc's filings, pulled directly from SEC XBRL data rather than a third-party terminal. Each row links to the filing it came from.

MetricValuePeriodSource
Revenue$17.2B2025-01-01 – 2025-12-31SEC filing
Net income$3.7B2025-01-01 – 2025-12-31SEC filing
Operating cash flow$3.5B2025-01-01 – 2025-12-31SEC filing
Diluted EPS$17.022025-01-01 – 2025-12-31SEC filing
Net margin21.5%2025-01-01 – 2025-12-31SEC filing
Shares outstanding214MAs of 2026-02-12SEC filing

Values are as tagged by the issuer in XBRL. Revenue for banks and insurers is net of interest expense where that is the reported line. Fiscal years that do not follow the calendar are shown by their period-end date. No price, market cap, or valuation multiple is shown because Yield Theory does not republish unlicensed market data.

Diluted EPS is the earnings figure behind the price-to-earnings ratio; the P/E multiple compression calculator shows how a change in that multiple moves a share price. Shares outstanding multiplied by the share price gives market capitalization.

What investors should watch in AON

Aon plc sits in Financials. Banks, insurers, asset managers, and exchanges — the plumbing of capital markets, geared directly to interest rates and credit. We have not yet written company-specific drivers for AON; the forces that matter most for the sector are:

  • ◆The shape of the yield curve and net interest margins
  • ◆Credit quality and loan-loss provisions
  • ◆Regulation and capital requirements
  • ◆Deal activity and market volatility

Key questions for the AON thesis

Each question starts with what the filings show, then why it matters. None of these is a rating or a forecast.

Does AON's reported profit turn into cash?

Operating cash flow was $3.5B, 0.94 times net income of $3.7B, for the fiscal year ended December 31, 2025.

Cash from operations trailed reported earnings. Working-capital build (receivables, inventory, prepayments) or non-cash gains are the usual reasons; check the cash-flow statement before relying on reported profit.

Form 10-K filed February 13, 2026

How much of AON's revenue is left as profit?

Net income was 21.5% of revenue for the fiscal year ended December 31, 2025, based on revenue and net income reported for the same period.

Net margin reflects the business model as much as execution, so compare it with companies in the same SEC industry and read the income statement for one-time items before treating it as a run rate.

Form 10-K filed February 13, 2026

Members-only research

What members are reading this month

The thesis, the numbers behind it, and what would break it. Full access is $39 a month.

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Congressional trading in AON

PoliticianTrade dateTypeOwnerAmountSource
Alan Armstrong2026-03-27PurchaseSelf$1,001 - $15,000Filing #fda235b3-bad7-4637-8fa1-053f354d929c
Thomas Kean2025-05-27PurchaseSelf$1,001 - $15,000Filing #20030491
Jefferson Shreve2025-05-08SaleSelf$15,001 - $50,000Filing #20030387
Jefferson Shreve2025-03-13PurchaseSelf$15,001 - $50,000Filing #20029038

All verified AON congressional disclosures

Congressional disclosures are delayed, range-based records—not real-time signals or proof of motive. See the source-linked tracker for scope and limitations.

AON — frequently asked questions

What does Aon plc do?

Aon provides insurance and reinsurance brokerage plus risk, retirement, and health consulting.

What were AON's latest reported annual revenue and net income?

For the fiscal year ended December 31, 2025, Aon plc reported revenue of $17.2B and net income of $3.7B, with operating cash flow of $3.5B. The figures come from Aon plc's SEC XBRL filings.

When does Aon plc's fiscal year end?

The SEC lists Aon plc's fiscal year end as December 31.

Do members of Congress trade AON?

The current verified House and Senate snapshot contains 4 transaction rows for AON, each linked to the original filing.

Is AON a good investment?

This page does not rate AON as a buy or sell. It sets out what Aon plc reports, what investors should watch and the questions a thesis has to answer, with links to the SEC filings. It is research, not investment advice.

This page is independent research and educational information, not investment advice or a recommendation to buy or sell any security. Company facts are compiled from public sources. Do your own research.

What do the AON numbers leave unanswered?

Financials describe the business. The next question is which assumptions an investment thesis depends on. Explore the member reports below for analysis of catalysts, risks, and what would change the view. $39/month or $249/year.

$39/mo or $249/yr · cancel future renewals anytime · sources included