Activity — Aon plc
320 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Warren E. Buffett 13F manager | Exit | Common stock | $-1.27B | -3.6M -100.00% | 0 | high |
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common stock | $-1.16B | -3.3M -100.00% | 0 | high |
| Q3 2025 as of | Farallon Capital Management LLC 13F manager | New | Common stock | $812.30M | +2.3M | 2,278,017 1.07% of shares | high |
| Q4 2025 as of | Norges Bank 13F manager | Add | Common stock | $568.10M | +1.6M +96.64% | 3,275,848 1.54% of shares | high |
| Q2 2026 as of | Mitsubishi UFJ Asset Management Co., Ltd. 13F manager | Add | Common stock | $312.13M | +941K +51.91% | 2,753,913 1.30% of shares | high |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common stock | $-199.14M | -617K -96.86% | 19,976 <0.01% of shares | high |
| Q2 2023 as of | Barclays PLC 13F manager | Add | Common stock | $191.61M | +555K +200.52% | 831,903 0.39% of shares | high |
| Q1 2026 as of | AQR Capital Management, LLC 13F manager | Add | Common stock | $177.39M | +550K +127.76% | 979,755 0.46% of shares | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Trim | Common stock | $-172.65M | -521K -3.21% | 15,716,429 7.41% of shares | high |
| Q1 2026 as of | Polen Capital Management LLC 13F manager | Trim | Common stock | $-158.89M | -492K -26.66% | 1,354,053 0.64% of shares | high |
| Q4 2025 as of | Farallon Capital Management LLC 13F manager | Add | Common stock | $136.64M | +387K +17.00% | 2,665,238 1.26% of shares | high |
| Q1 2025 as of | Barclays PLC 13F manager | Add | Common stock | $132.65M | +332K +60.82% | 878,929 0.41% of shares | high |
| Q1 2026 as of | Adage Capital Partners Gp, L.L.C. 13F manager | Trim | Common stock | $-124.08M | -384K -63.37% | 222,169 0.10% of shares | high |
| Q1 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-120.31M | -382K -57.96% | 276,825 0.13% of shares | high |
| Q1 2026 as of | Voya Investment Management LLC 13F manager | Trim | Common stock | $-111.60M | -346K -74.16% | 120,463 0.06% of shares | high |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Add | Common stock | $110.02M | +341K +74.66% | 797,418 0.38% of shares | high |
| Q1 2026 as of | Boston Partners 13F manager | Add | Common stock | $103.30M | +320K +19.57% | 1,955,032 0.92% of shares | high |
| Q2 2026 as of | Mawer Investment Management Ltd. 13F manager | Trim | Common stock | $-101.52M | -306K -20.71% | 1,171,624 0.55% of shares | high |
| Q1 2026 as of | Viking Global Investors LP 13F manager | Add | Common stock | $97.95M | +303K +38.72% | 1,087,114 0.51% of shares | high |
| Q1 2026 as of | Amundi 13F manager | Add | Common stock | $92.17M | +286K +23.46% | 1,502,890 0.71% of shares | high |
| Q3 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-89.75M | -259K -26.72% | 711,557 0.34% of shares | high |
| Q1 2026 as of | Royal Bank of Canada 13F manager | Trim | Common stock | $-86.06M | -267K -27.93% | 688,130 0.32% of shares | high |
| Q2 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-81.37M | -228K -25.95% | 650,846 0.31% of shares | high |
| Q1 2026 as of | CPPIB Crestone Peak Resources Canada Inc. 13F manager | Add | Common stock | $79.63M | +247K +1104.01% | 269,059 0.13% of shares | high |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $70.35M | +212K +2.30% | 9,416,039 4.44% of shares | high |
| Q2 2026 as of | Deutsche Bank AG 13F manager | Trim | Common stock | $-69.85M | -211K -26.47% | 585,041 0.28% of shares | high |
| Q4 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-59.27M | -165K -23.19% | 546,544 0.26% of shares | high |
| Q1 2026 as of | Eminence Capital, LP 13F manager | New | Common stock | $57.78M | +179K | 179,019 0.08% of shares | high |
| Q1 2024 as of | Barclays PLC 13F manager | Add | Common stock | $56.93M | +171K +21.86% | 951,075 0.45% of shares | high |
| Q1 2026 as of | Sustainable Growth Advisers, LP 13F manager | Trim | Common stock | $-54.76M | -170K -13.89% | 1,051,805 0.50% of shares | high |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | Trim | Common stock | $-52.51M | -163K -42.04% | 224,321 0.11% of shares | high |
| Q1 2026 as of | Bank of New York Mellon Corp/The 13F manager | Trim | Common stock | $-50.99M | -158K -4.54% | 3,321,092 1.57% of shares | high |
| Q1 2026 as of | Southpoint Capital Advisors LP 13F manager | Trim | Common stock | $-48.42M | -150K -23.08% | 500,000 0.24% of shares | medium |
| Q1 2026 as of | Cantillon Capital Management LLC 13F manager | Trim | Common stock | $-47.59M | -147K -11.86% | 1,095,574 0.52% of shares | medium |
| Q2 2026 as of | M.D. Sass, LLC 13F manager | Exit | Common stock | $-38.30M | -109K -100.00% | 0 | medium |
| Q2 2026 as of | Fiera Capital Corp 13F manager | Trim | Common stock | $-37.90M | -114K -21.42% | 419,313 0.20% of shares | medium |
| Q1 2026 as of | Diamond Hill Capital Management Inc 13F manager | Trim | Common stock | $-35.00M | -108K -6.79% | 1,487,887 0.70% of shares | medium |
| Q2 2026 as of | Fiducient Advisors LLC 13F manager | Trim | Common stock | $-34.65M | -104K -87.34% | 15,135 <0.01% of shares | medium |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $33.09M | +103K +2.00% | 5,244,309 2.47% of shares | medium |
| Q4 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-30.06M | -85K -12.64% | 588,544 0.28% of shares | medium |
| Q1 2026 as of | D. E. Shaw & Co., Inc. 13F manager | Add | Common stock | $27.72M | +86K +202.40% | 128,323 0.06% of shares | medium |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Trim | Common stock | $-26.39M | -75K -5.21% | 1,360,588 0.64% of shares | medium |
| Q1 2026 as of | Lazard Asset Management LLC 13F manager | Trim | Common stock | $-22.22M | -69K -5.35% | 1,217,243 0.57% of shares | medium |
| Q1 2026 as of | Assetmark, Inc 13F manager | Add | Common stock | $21.68M | +67K +504.30% | 80,499 0.04% of shares | medium |
| Q1 2026 as of | BNP Paribas Financial Markets 13F manager | Trim | Common stock | $-17.33M | -54K -12.72% | 368,360 0.17% of shares | medium |
| Q2 2026 as of | Forsta Ap-Fonden 13F manager | Exit | Common stock | $-16.92M | -48K -100.00% | 0 | medium |
| Q1 2026 as of | First Pacific Advisors, LP 13F manager | Add | Common stock | $15.08M | +47K +7.12% | 703,258 0.33% of shares | medium |
| Q1 2026 as of | Schroder Investment Management Group 13F manager | Add | Common stock | $14.35M | +44K +59.88% | 118,198 0.06% of shares | medium |
| Q1 2026 as of | Suncoast Equity Management 13F manager | New | Common stock | $14.33M | +44K | 44,390 0.02% of shares | medium |
| Q4 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-13.35M | -46K -5.55% | 780,471 0.37% of shares | medium |