Aon plc (AON) stock
Close on Nov 11, 2026Market cap $71.40BP/E 18.4Yield 0.86%
Aon plc grew revenue 3.8% to $17.68B over the twelve months to Sep 30, 2026. Operating income rose 9.9% to $4.65B, moving the operating margin from 24.8% to 26.3%. Free cash flow was $3.27B, up 7.4% from a year earlier. At the latest close the market valued the company at $71.40B, 18.4 times its earnings.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $71.40B
- P/E ratio
- 18.4
- Price to sales
- 4.04
- Price to book
- 7.07
- Dividend yield
- 0.86%
- Free cash flow yield
- 4.57%
Fundamentals
- Revenue
- $17.68B
- Net income
- $3.93B
- EPS, diluted
- $18.26
- Free cash flow
- $3.27B
- Book value per share
- $47.42
- Diluted shares
- 213M
Trading
- Next earnings
- Jan 29, 2027 (estimated, before the open)
- Previous close
- $336.34
- Open
- $330.84
- Day's range
- $330.84 – $336.64
- Volume
- 573,252
- Average volume (20 days)
- 1,582,042
- Index membership
- S&P 500 (since Jun 2020), Russell 1000 (since Sep 2022)
- Beta (5 years)
- 0.56
- 52-week range
- $266.33 – $382.34
- RSI (14 days)
- 67.5
- Volatility (1 year)
- 29.0%
- Relative volume
- 0.37×
- WACC
- 6.6%
On 2 of our idea lists: Dividend growers, Superinvestor favorites
Index membership is inferred from the holdings of funds that track each index (VOO, IWB), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2009, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | AON | S&P 500 | Difference | AON per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | +23.1% | -2.4% | +25.5 pts | ||
| 3 months | -5.6% | -1.2% | −4.4 pts | ||
| Year to date | -4.2% | +12.3% | −16.5 pts | ||
| 1 year | -3.4% | +12.4% | −15.8 pts | ||
| 3 years | +2.7% | +78.8% | −76.1 pts | +0.9% | +21.4% |
| 5 years | +16.4% | +75.2% | −58.8 pts | +3.1% | +11.9% |
| 10 years | +231.8% | +311.1% | −79.3 pts | +12.7% | +15.2% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Aon filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- News
- News
- News
- Update
- Update
About Aon
Insurance Agents, Brokers & Service
Aon plc is a global professional services firm that delivers risk management, insurance brokerage, reinsurance, and human capital advisory solutions. The company operates through two primary divisions: Risk Capital and Human Capital. Risk Capital provides commercial risk solutions, including property, casualty, and cyber brokerage, captives management, and affinity programs, alongside treaty and facultative reinsurance and capital market advisory services. Human Capital focuses on health and wealth solutions, designing employee health and voluntary benefits, compensation strategies, retirement consulting, pension administration, and investment management. Its customer base includes organizations across diverse industries, public pensions, endowments, and foundations.
Company profile, executives and historyAon stock: common questions
What is Aon's stock price?
AON closed at $336.55 on Nov 11, 2026, up 0.06% on the day. Over the past 52 weeks it traded between $266.33 and $382.34.
What is Aon's market cap?
Aon was worth $71.40B at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is AON's P/E ratio?
AON trades at 18.4 times earnings, based on diluted earnings per share of $18.26 over the twelve months to Sep 30, 2026.
How much revenue does Aon make?
Aon reported revenue of $17.68B for the twelve months to Sep 30, 2026, up 3.8% from a year earlier.
Does Aon pay a dividend?
Yes. Aon paid $2.91 per share over the last twelve months, a yield of 0.86% at the latest price, and has raised its annual dividend 14 years in a row.
When does Aon report earnings next?
Aon is expected to report Q4 FY2026 results on Jan 29, 2027, before the open. The date is estimated from its past reporting pattern until the company confirms it.
How has AON stock performed over the past year?
Including dividends, AON returned -3.4% over the past year, against +12.4% for the S&P 500.
How many AON shares are sold short?
4M shares were sold short at the latest FINRA report, 1.82% of the float, or 2.2 days of average trading volume.
Who are Aon's competitors?
Companies most similar to Aon by business, industry and size include MRSH, AJG, WTW, BRO, EQH.
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