Stocks › AON
Aon plc
AON·NYSE·
Ireland·USD
Ireland·USD$273.99
+1.94 (+0.71%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
AON
Aon plc · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
AONS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
Loading price history…
Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of AON by members of U.S. Congress · 143 on record · 2 in the last 12 months
Whale Activity
Position changes in AON reported for 2026-09-30 by 2 tracked institutional filers
- Increased0
- New0
- Held0
- Decreased0
- Closed0
- No prior filing2
| Filer | Shares | Value | Change |
|---|---|---|---|
| DUDLEY & SHANLEY, INC. | 85.2K | $23.6M | — |
| Violich Capital Management, Inc. | 20.8K | $5.8M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by AON insiders, by quarter · Form 4
Recent Insider Transactions
1,800 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| KNIGHT LESTER BDirector · Director | Purchase | +7,212 | $327.52 | $2.4M | Sep 2, 2026 | Form 4 ↗ |
| KNIGHT LESTER BDirector · Director | Purchase | +5,097 | $326.53 | $1.7M | Sep 2, 2026 | Form 4 ↗ |
| KNIGHT LESTER BDirector · Director | Purchase | +4,145 | $328.34 | $1.4M | Sep 2, 2026 | Form 4 ↗ |
| KNIGHT LESTER BDirector · Director | Purchase | +367 | $330.51 | $121K | Sep 2, 2026 | Form 4 ↗ |
| KNIGHT LESTER BDirector · Director | Purchase | +1,739 | $325.63 | $566K | Sep 2, 2026 | Form 4 ↗ |
| KNIGHT LESTER BDirector · Director | Purchase | +1,440 | $329.69 | $475K | Sep 2, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −725 | $378.00 | $274K | Jul 28, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −700 | $376.00 | $263K | Jul 28, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −475 | $380.00 | $181K | Jul 28, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −675 | $374.00 | $252K | Jul 17, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −650 | $372.00 | $242K | Jul 17, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −625 | $370.00 | $231K | Jul 17, 2026 | Form 4 ↗ |
| Zeidel DarrenGeneral Counsel | Sale | −600 | $360.00 | $216K | Jul 7, 2026 | Form 4 ↗ |
| KNIGHT LESTER BDirector | Grant / award | +1,488 | — | — | Jun 25, 2026 | Form 4 ↗ |
| Alvarez Jose AntonioDirector | Tax withholding | −372 | $315.95 | $118K | Jun 25, 2026 | Form 4 ↗ |
| Alvarez Jose AntonioDirector | Grant / award | +776 | — | — | Jun 25, 2026 | Form 4 ↗ |
| FRANCIS CHERYL ADirector | Tax withholding | −186 | $315.95 | $59K | Jun 25, 2026 | Form 4 ↗ |
| FRANCIS CHERYL ADirector | Grant / award | +776 | — | — | Jun 25, 2026 | Form 4 ↗ |
| STAVRIDIS JAMES G.Director | Tax withholding | −186 | $315.95 | $59K | Jun 25, 2026 | Form 4 ↗ |
| STAVRIDIS JAMES G.Director | Grant / award | +776 | — | — | Jun 25, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding AON · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 6.4M | $2.14B | 0.09% | Jun 30, 2026 |
| VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS | 5.5M | $1.84B | 0.11% | Jun 30, 2026 |
| Dodge & Cox Stock Fund Dodge & Cox Funds | 3.7M | $1.22B | 1.03% | Jun 30, 2026 |
| Dodge & Cox International Stock Fund Dodge & Cox Funds | 2.6M | $846.8M | 1.25% | Jun 30, 2026 |
| VANGUARD MID-CAP INDEX FUND VANGUARD INDEX FUNDS | 2.2M | $729.1M | 0.33% | Jun 30, 2026 |
| VANGUARD VALUE INDEX FUND VANGUARD INDEX FUNDS | 1.9M | $640.5M | 0.25% | Jun 30, 2026 |
| VANGUARD DIVIDEND APPRECIATION INDEX FUND VANGUARD SPECIALIZED FUNDS | 1.2M | $435.7M | 0.33% | Jul 31, 2026 |
| VANGUARD INSTITUTIONAL INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS | 1.2M | $384.6M | 0.11% | Jun 30, 2026 |
| iShares Russell 1000 Growth ETF iSHARES TRUST | 782.1K | $252.4M | 0.23% | Mar 31, 2026 |
| WCM Focused International Growth Fund INVESTMENT MANAGERS SERIES TRUST | 748.0K | $248.1M | 1.10% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list AON's shares (CUSIP G0403H108), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- JPMORGAN CHASE & COSCHEDULE 13G · passive (13G) · 12.2M shares5.6%
Jul 16, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming aon as client
- AON CORPORATIONAON CORPORATION · 2026 Q2 · INS, TAX$170K
Filing ↗ - AON CORPORATIONAON CORPORATION · 2026 Q1 · INS, TAX$320K
Filing ↗ - AON CORPORATIONAON CORPORATION · 2025 Q4 · INS$230K
Filing ↗ - AON CORPORATIONAON CORPORATION · 2025 Q3 · INS$220K
Filing ↗ - AON CORPORATIONAON CORPORATION · 2025 Q2 · INS$300K
Filing ↗
Government Contracts
Federal awards to Aon plc · USAspending
No federal contract awards found for Aon plc.
U.S. Patents
Recent USPTO applications naming Aon plc
No USPTO patent applications found for Aon plc.
Annual Financials
From AON's 10-K filings · XBRL
| Fiscal year | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 |
|---|---|---|---|---|---|
| Revenue | $17.18B | $15.70B | $13.38B | $12.48B | $12.19B |
| Operating income | $4.34B | $3.83B | $3.79B | $3.67B | $2.09B |
| Net income | $3.69B | $2.65B | $2.56B | $2.59B | $1.25B |
| Diluted EPS | $17.02 | $12.49 | $12.51 | $12.14 | $5.55 |
| Operating cash flow | $3.48B | $3.04B | $3.44B | $3.22B | $2.18B |
| Cash and equivalents | $1.20B | $1.08B | $778.0M | $690.0M | $544.0M |
| Total assets | $50.78B | $48.97B | $33.96B | $32.70B | $31.92B |
| Total liabilities | $41.24B | $42.53B | $34.70B | $33.13B | $30.76B |
| Shareholders' equity | $9.35B | $6.12B | -$826.0M | -$529.0M | $1.06B |
As Aon plc tagged them in its 10-K filings: totals for the year on the income and cash-flow lines, values at the year's end on the balance-sheet lines. Latest 10-K, filed Feb 13, 2026 ↗
Stock Splits
Every split and reverse split in the price history
- 3-for-2Stock splitMay 18, 1999
- 3-for-2Stock splitMay 15, 1997
- 3-for-2Stock splitMay 17, 1994
- 2-for-1Stock splitMay 27, 1987
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 1.01, 1.02, 2.03, 9.01Material agreement · Termination of agreement · Direct financial obligationSep 22, 2026
EDGAR ↗ - 8-K · Items 8.01, 9.01Other eventsSep 17, 2026
EDGAR ↗ - 8-K · Items 8.01, 9.01Other eventsSep 11, 2026
EDGAR ↗ - 8-K · Items 1.01, 7.01, 9.01Material agreement · Reg FD disclosureAug 31, 2026
EDGAR ↗ - 8-K · Items 5.02, 9.01Officer / director changeAug 17, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsJul 29, 2026
EDGAR ↗ - 8-K · Items 5.02, 5.07, 8.01, 9.01Officer / director change · Shareholder vote · Other eventsJul 1, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 1, 2026
EDGAR ↗
About Aon plc
From SEC EDGAR company records
Industry (SIC 6411)Insurance Agents, Brokers & Service
SectorFinancials
HeadquartersDUBLIN 2, Ireland
IncorporatedL2
SEC CIK0000315293 ↗
Former namesAON CORP