AON — Aon plc
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Dividends
Measured signals that fired on AON
| date | signal | measured base rate |
|---|---|---|
| 2026-07-28 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-17 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-07-02 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-22 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-10 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-05 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-28 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 725 | 378.00 | 274.1K |
| 2026-07-28 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 700 | 376.00 | 263.2K |
| 2026-07-28 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 475 | 380.00 | 180.5K |
| 2026-07-17 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 675 | 374.00 | 252.4K |
| 2026-07-17 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 650 | 372.00 | 241.8K |
| 2026-07-17 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 625 | 370.00 | 231.2K |
| 2026-07-07 | Zeidel Darren General Counsel | Open-market sale 10b5-1 plan | 600 | 360.00 | 216.0K |
| 2026-07-01 | Reese Edmund Chief Financial Officer | Shares withheld for tax | 2.2K | 343.56 | 755.2K |
| 2026-07-01 | Reese Edmund Chief Financial Officer | Option exercise | 4.0K | — | — |
| 2026-06-25 | Cai Jin-Yong Director | Shares withheld for tax | 397 | 315.95 | 125.3K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 5.2B | 16.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4B | 13.6M |
| Capital World Investors | 3.7B | 11.5M |
| STATE STREET CORP | 3.0B | 9.2M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 2.8B | 8.4M |
| Dodge & Cox | 2.6B | 8.1M |
| MORGAN STANLEY | 2.1B | 6.4M |
| JPMORGAN CHASE & CO | 1.8B | 5.6M |
| GEODE CAPITAL MANAGEMENT, LLC | 1.7B | 5.2M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5B | 4.6M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 8-K | 2026-08-17 | 2026-08-17 | on EDGAR ↗ |
| 4 | 2026-07-30 | 2026-07-28 | on EDGAR ↗ |
| 10-Q | 2026-07-29 | 2026-06-30 | on EDGAR ↗ |
| 8-K | 2026-07-29 | 2026-07-29 | on EDGAR ↗ |
| 144 | 2026-07-28 | — | on EDGAR ↗ |
| 4 | 2026-07-21 | 2026-07-17 | on EDGAR ↗ |
| 144 | 2026-07-17 | — | on EDGAR ↗ |
| 4 | 2026-07-09 | 2026-07-07 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Aon Announces Doug Hammond as Global Executive Chairman of Middle Market and Leadership Appointments for the North America Middle Market Segment · 2026-08-19
- Aon Announces Doug Hammond as Global Executive Chairman of Middle Market and Leadership Appointments for the North America Middle Market Segment · 2026-08-19
- Warren Buffett Disciple Seth Klarman Bets on Cruise Lines, Auto Parts, Amazon and Bill Ackman in Q2 · 2026-08-18 · benzinga
- Aon Plc (AON) filed form 8-K · 2026-08-17 · SEC EDGAR
- Aon Announces CFO Transition · 2026-08-17
- Aon Announces CFO Transition · 2026-08-17
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