Aon plc Class A Ordinary Shares (Ireland) (AON) Stock

About Aon plc Class A Ordinary Shares (Ireland)

Aon plc Class A Ordinary Shares (Ireland) is led by CEO Gregory Clarence Case, employs 60,000 people, headquartered in Dublin, IE, publicly traded since 1980.

Aon plc Class A Ordinary Shares (Ireland) (AON) stock trades at $303.52 with a market capitalization of $64.38B. The stock is valued at a price-to-earnings (P/E) ratio of 15.24, price-to-book of 6.15, price-to-sales of 3.35. Over the past 52 weeks the stock has ranged between $267.24 and $382.34, and currently trades 20.6% below its 52-week high. It pays a dividend yielding 1.18%.

On profitability, Aon plc Class A Ordinary Shares (Ireland) generates a return on equity (ROE) of 42.56%, above the typical market range of roughly 12-15%, return on capital employed of 18.31%, an operating margin of 25.28%, a net profit margin of 22.27%.

In its most recent fiscal year, Aon plc Class A Ordinary Shares (Ireland) reported annual revenue of $17.2B, net profit of $3.7B. Over the last 5 fiscal years, revenue grew at an average annual rate of 9.2%, and net profit grew at an average annual rate of 13.4%. Over that span net profit grew faster than revenue, so net margin widened.

The balance sheet shows a debt-to-equity ratio of 1.64, a current ratio of 1.11, total assets of $50.8B, $1.2B in cash and equivalents. For banks and other lenders, borrowing and deposits are part of the business model, so debt-to-equity and the current ratio read differently than for other companies.

AON has an average daily trading volume of 1,626,980 shares, a beta of 0.66 (historically less volatile than the overall market).

Aon plc Class A Ordinary Shares (Ireland) by the numbers, 2016–2025

Between 2016 and 2025 Aon plc Class A Ordinary Shares (Ireland) reported revenue of $9.4B rising to $17.2B, a change of +82.6% across 10 years. Compounded, revenue has grown 9.2% a year over five years, 11.3% over three, 9.4% over the last twelve months. Net profit rose to $3.7B.

Operating margin went from 19.3% in 2016 to 25.3% in 2025, a gain of 6.0 percentage points. The most recent net margin is 22.27%. On a trailing twelve-month basis to Jun '26, revenue is $17.6B and net profit $3.9B.

Borrowings rose from $6.3B to $16.5B, cash from operations was $3.5B in the latest year, positive in 10 of the last 10.

Return on equity has averaged -119.7% over five years, and was 39.5% in the most recent year.

The share price itself has compounded at —% a year over five years, —% over three, —% over the last year. Past price movement is history, not a forecast.

Figures are as reported and in the company's own reporting currency. They describe what has already happened and carry no implication about what follows.

Aon plc Class A Ordinary Shares (Ireland) (AON) — frequently asked questions