AON — Aon plc price, chart and key statistics

Price data

Price

$302.50

YTD price return

-14.28%

YTD total return

-13.85%

Next earnings

Oct 28, 2026 · Before open

Market cap

64.2B2016-12 29.3B2026-10 64.1B+118.6% over the window

Enterprise value

78.8B

Shares outstanding

212.1M2016-06 265.6M2026-06 212.1M-20.1% over the window

52W low

$266.33

52W high

$382.34

From 52W high

-20.88%

From 52W low

+13.58%

52W range

31%

Beta

0.68

Volume

Rel volume

1.49×

30D volume

1.9M

30D $ vol

555.7M

Insider trading

Insider net 1WNo open-market insider purchase or sale with a transaction date in the last 7 days, as filed on Form 4.

none

Insider net 1MNo open-market insider purchase or sale with a transaction date in the last 30 days, as filed on Form 4.

none

Insider net 3M1 insider-day of buying ($6.5M) and 0 of selling (no priced lot) in the last 91 days, by transaction date, open-market transactions only — awards, exercises, tax withholding and employee-plan purchases are not counted. A Form 4 is filed within two business days of the trade, so the newest days may not be in yet.

+$6.5M

Insider net 1Y2 insider-days of buying ($7.8M) and 5 of selling ($4.7M) in the last 365 days, by transaction date, open-market transactions only — awards, exercises, tax withholding and employee-plan purchases are not counted. A Form 4 is filed within two business days of the trade, so the newest days may not be in yet.

+$3.1M

Form 4 transactions by trade date, as filed; latest on file 2026-09-02.

Fundamentals

Sales (ttm)

17.6B2016-06 10.5B2026-06 17.6B+66.8% over the window

Sales/share

$82.862016-06 $39.672026-06 $82.86+108.9% over the window

EPS (ttm)

$18.152016-06 $5.422026-06 $18.15+235.1% over the window

FCF (ttm)

3.2B2016-06 2.1B2026-06 3.2B+57.0% over the window

FCF/share

$15.312016-06 $7.792026-06 $15.31+96.5% over the window

Book value/share

$45.252016-06 $20.712026-06 $45.25+118.5% over the window

Net margin

22.27%2016-06 14.2%2026-06 22.3%+56.8% over the window

ROE

40.78%2016-06 27.2%2026-06 40.8%+49.9% over the window

ROA

7.34%2016-06 5.6%2026-06 7.3%+30.9% over the window

Debt / equity

1.35×2016-06 1.072026-06 1.35+25.6% over the window

Current ratio

1.032016-06 1.092026-06 1.03-5.0% over the window

Growth (CAGR, ttm) · 10Y

Sales

+4.93%2025-06-30 → 2026-06-3016.8B → 17.6B (+4.9% total)+10.93%2023-06-30 → 2026-06-3012.9B → 17.6B (+36.5% total)+8.37%2021-06-30 → 2026-06-3011.8B → 17.6B (+49.5% total)+5.25%2016-06-30 → 2026-06-3010.5B → 17.6B (+66.8% total)

Net income

+50.41%2025-06-30 → 2026-06-302.6B → 3.9B (+50.4% total)+13.52%2023-06-30 → 2026-06-302.7B → 3.9B (+46.3% total)+13.36%2021-06-30 → 2026-06-302.1B → 3.9B (+87.2% total)+10.10%2016-06-30 → 2026-06-301.5B → 3.9B (+161.6% total)

FCF

+11.55%2025-06-30 → 2026-06-302.9B → 3.2B (+11.5% total)+3.31%2023-06-30 → 2026-06-302.9B → 3.2B (+10.3% total)+3.11%2021-06-30 → 2026-06-302.8B → 3.2B (+16.5% total)+4.61%2016-06-30 → 2026-06-302.1B → 3.2B (+57.0% total)

Shares

-1.62%2025-06-30 → 2026-06-30215.6M → 212.1M (-1.6% total)+1.50%2023-06-30 → 2026-06-30202.9M → 212.1M (+4.6% total)-1.24%2021-06-30 → 2026-06-30225.7M → 212.1M (-6.0% total)-2.22%2016-06-30 → 2026-06-30265.6M → 212.1M (-20.1% total)

Per-share growth (CAGR, ttm) · 10Y

EPS

+52.03%2025-06-30 → 2026-06-30$11.94 → $18.15 (+52.0% total)+12.30%2023-06-30 → 2026-06-30$12.81 → $18.15 (+41.7% total)+14.84%2021-06-30 → 2026-06-30$9.09 → $18.15 (+99.7% total)+12.86%2016-06-30 → 2026-06-30$5.42 → $18.15 (+235.1% total)

Sales/share

+6.66%2025-06-30 → 2026-06-30$77.69 → $82.86 (+6.7% total)+9.30%2023-06-30 → 2026-06-30$63.46 → $82.86 (+30.6% total)+9.73%2021-06-30 → 2026-06-30$52.10 → $82.86 (+59.0% total)+7.64%2016-06-30 → 2026-06-30$39.67 → $82.86 (+108.9% total)

FCF/share

+13.39%2025-06-30 → 2026-06-30$13.50 → $15.31 (+13.4% total)+1.78%2023-06-30 → 2026-06-30$14.52 → $15.31 (+5.4% total)+4.40%2021-06-30 → 2026-06-30$12.35 → $15.31 (+24.0% total)+6.99%2016-06-30 → 2026-06-30$7.79 → $15.31 (+96.5% total)

Book value/share

+24.42%2025-06-30 → 2026-06-30$36.37 → $45.25 (+24.4% total)+420.55%2023-06-30 → 2026-06-30$0.32 → $45.25 (+14021.7% total)+18.02%2021-06-30 → 2026-06-30$19.77 → $45.25 (+128.9% total)+8.13%2016-06-30 → 2026-06-30$20.71 → $45.25 (+118.5% total)

Dividend/share

+10.30%2025-06-30 → 2026-06-30$2.77 → $3.06 (+10.3% total)+10.00%2023-06-30 → 2026-06-30$2.30 → $3.06 (+33.1% total)+10.32%2021-06-30 → 2026-06-30$1.87 → $3.06 (+63.4% total)+9.53%2016-06-30 → 2026-06-30$1.23 → $3.06 (+148.4% total)

Price

-10.21%2025-10-27 → 2026-10-27$336.87 → $302.50 (-10.2% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.-0.48%2023-10-27 → 2026-10-27$306.88 → $302.50 (-1.4% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.-0.92%2021-10-27 → 2026-10-27$316.87 → $302.50 (-4.5% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.+10.83%2016-10-26 → 2026-10-27$108.19 → $302.50 (+179.6% total)Price appreciation from split-adjusted daily closes, excluding dividends; endpoints are exact trading-day anniversaries of the latest close.

Total return

-9.77%2025-10-27 → 2026-10-27$335.22 → $302.50 (-9.8% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.+0.23%2023-10-27 → 2026-10-27$300.42 → $302.50 (+0.7% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.-0.21%2021-10-27 → 2026-10-27$305.69 → $302.50 (-1.0% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.+11.78%2016-10-26 → 2026-10-27$99.30 → $302.50 (+204.6% total)Total return with dividends reinvested (adjusted daily closes); endpoints are exact trading-day anniversaries of the latest close. The gap against the Price row is the dividend contribution.

Fundamentals end at the last reported quarter; price and total return end at the latest close.

Valuation

P/E (ttm)Price ÷ TTM diluted EPS. Net income carries everything below the operating line, including one-off gains. Negative when the trailing year lost money.

16.7×2016-12 19.422026-10 16.39-15.6% over the window

P/OI (ttm)Price ÷ TTM operating income. Excludes the below-the-line items that make P/E jump — mark-to-market gains, settlements, tax true-ups.

13.8×2016-12 16.032026-10 13.78-14.0% over the window

Fwd P/E

15.0×

P/S (ttm)Market cap ÷ TTM revenue.

3.7×2016-12 2.942026-10 3.65+24.2% over the window

P/B (mrq)Market cap ÷ stockholders' equity at the most recent quarter end.

6.7×2016-12 5.402026-10 6.68+23.8% over the window

P/FCF (ttm)Market cap ÷ TTM free cash flow (operating cash flow − capex).

19.8×2016-12 13.932026-10 19.75+41.8% over the window

EV/EBITDA (fy)

16.3×

EV/Sales (ttm)

4.5×

FCF yield (ttm)TTM free cash flow ÷ market cap — the inverse of P/FCF.

5.06%2016-09 7.2%2026-06 4.6%-35.7% over the window

Dividend yield (fwd)Indicated annual dividend ÷ last close: the last regular payment × payments a year, from our own dividend record. Shown only for a company that pays the same amount each time (raises and cuts allowed), whose payments are on schedule and agree with the dividends it reports paying; a company whose payments vary in size, such as an unequal interim and final, has no forward figure — see the ttm yield.

1.08%

Dividend/share (fwd)The indicated annual dividend: the last regular payment × payments a year, for a company that pays the same amount each time.

$3.28

Buyback yield (realized, 1y)1 − shares_at(2026-06-30) ÷ shares_at(2025-06-30) = 1 − 212.1M ÷ 215.6M. Point-in-time share counts from the company's own SEC filings (the same count at both ends), published only when the cash flow statement shows repurchases inside that window. A falling price can't inflate it; negative means net dilution.

1.62%

Shareholder yield (realized, 1y)Buyback leg + dividend leg: shares retired over the year (1.62%) + dividends paid over that year ($658M) ÷ market_cap_at(2025-06-30) ($76.9B). Both legs are measured against the start of the window, so a payout can't shrink its own denominator.

2.48%

Buyback yield (cash, ttm)Buybacks net of issuance over the trailing twelve months ($1.5B) ÷ today's market cap ($64.2B). Dollars SPENT over what the company is worth NOW — a stock that fell after buying reads high.

2.39%2016-09 4.9%2026-06 2.2%-55.5% over the window

Shareholder yield (cash, ttm)(TTM buybacks net of issuance $1.5B + TTM dividends $658M) ÷ today's market cap ($64.2B). Same caveat as the cash buyback yield.

3.42%2016-09 6.1%2026-06 3.1%-48.6% over the window

Vs own 10Y history

P/E

1st

P/OI

1st

P/S

21st

P/B

15th

P/FCF

26th