Aon plc - Class A Ordinary Shares (AON)

Historical Holders from Q1 2016 to Q4 2025

Type / Class
Equity / Class A Ordinary Shares
Symbol
AON on NYSE
Shares outstanding
213,748,891
Price per share
$352.88
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
185,528,966
Total reported value
$66,151,951,138
% of total 13F portfolios
0.04%
Share change
-4,030,546
Value change
-$1,433,390,749
Number of holders
1,224
Price from insider filings
$352.88
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Aon plc - Class A Ordinary Shares (AON) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 4.6% $3,302,227,997 9,832,449 Massachusetts Financial Services Company 31 Mar 2025
As of 30 Sep 2025, Aon plc - Class A Ordinary Shares (AON) has 1,224 institutional shareholders filing 13F forms. They hold 185,528,966 shares. of 213,748,891 outstanding shares (87%) .

Top 25 institutional shareholders own 56% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 9.3% 19,979,391 -1.5% 0.11% $7,124,251,244
BlackRock, Inc. 7.4% 15,846,586 -0.53% 0.1% $5,650,575,693
Capital World Investors 5.6% 12,076,697 -0.56% 0.59% $4,306,285,230
STATE STREET CORP 4.3% 9,229,464 +1.2% 0.11% $3,291,047,763
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 4.1% 8,757,686 -2.2% 0.97% $3,122,815,673
MORGAN STANLEY 2.9% 6,136,386 -35% 0.13% $2,188,114,114
GEODE CAPITAL MANAGEMENT, LLC 2.4% 5,113,297 -8.5% 0.12% $1,818,651,090
Berkshire Hathaway Inc 1.9% 4,100,000 0% 0.55% $1,461,978,000
Bank of New York Mellon Corp 1.7% 3,715,346 +5.9% 0.24% $1,324,818,079
Dodge & Cox 1.6% 3,464,683 0.67% $1,235,436,664
JPMORGAN CHASE & CO 1.6% 3,347,197 -29% 0.08% $1,193,559,822
Mawer Investment Management Ltd. 1.2% 2,498,089 -16% 4.6% $890,768,575
POLEN CAPITAL MANAGEMENT LLC 1.2% 2,490,167 -9.3% 2.9% $887,943,817
NEUBERGER BERMAN GROUP LLC 1.1% 2,330,363 +12% 0.61% $830,945,128
EAGLE CAPITAL MANAGEMENT LLC 1.1% 2,284,151 -0% 2.6% $814,482,459
FARALLON CAPITAL MANAGEMENT LLC 1.1% 2,278,017 +15% 4.6% $812,295,302
NORTHERN TRUST CORP 1% 2,213,069 -2.5% 0.1% $789,136,144
Independent Franchise Partners LLP 0.98% 2,096,486 +42% 4.9% $747,564,977
Veritas Asset Management LLP 0.96% 2,053,673 +19% 7.8% $732,298,718
WCM INVESTMENT MANAGEMENT, LLC 0.95% 2,037,843 -0.12% 1.5% $722,659,938
Mitsubishi UFJ Asset Management Co., Ltd. 0.85% 1,823,442 -33% 0.47% $650,202,948
Capital International Investors 0.82% 1,756,457 +3.1% 0.1% $626,179,147
Boston Partners 0.8% 1,711,250 +16% 0.63% $610,986,080
DIAMOND HILL CAPITAL MANAGEMENT INC 0.73% 1,563,821 -0.68% 2.6% $557,627,314
BANK OF AMERICA CORP /DE/ 0.67% 1,435,375 +0.8% 0.04% $511,825,955

Institutional Holders of Aon plc - Class A Ordinary Shares (AON) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q4 824,460 $291,106,151 -$66,174,369 $352.88 67
2025 Q3 185,528,966 $66,151,951,138 -$1,433,390,749 $356.58 1,224
2025 Q2 193,803,967 $69,114,264,150 +$824,711,581 $356.76 1,210
2025 Q1 191,456,033 $76,204,395,920 -$79,841,731 $399.09 1,253
2024 Q4 191,857,609 $68,879,464,589 +$390,817,099 $359.16 1,173
2024 Q3 189,740,974 $65,657,607,450 +$1,123,217,468 $345.99 1,130
2024 Q2 188,039,170 $55,200,997,498 +$4,947,770,572 $293.58 1,095
2024 Q1 171,335,880 $57,146,952,089 +$380,525,454 $333.72 1,067
2023 Q4 170,590,442 $49,635,116,331 -$914,310,510 $291.02 1,048
2023 Q3 173,485,949 $56,245,969,960 -$1,089,310,633 $324.22 1,029
2023 Q2 176,411,103 $60,830,438,597 +$299,365,357 $345.20 1,006
2023 Q1 175,828,109 $55,427,031,219 +$492,490,942 $315.29 994
2022 Q4 174,881,399 $52,495,174,967 -$1,399,952,425 $300.14 1,014
2022 Q3 180,194,038 $48,296,882,905 -$738,928,077 $267.87 926
2022 Q2 182,574,562 $49,227,391,620 -$942,510,898 $269.68 937
2022 Q1 186,968,158 $60,864,804,673 +$69,133,410 $325.63 957
2021 Q4 186,590,632 $56,046,602,243 -$3,586,959,629 $300.56 967
2021 Q3 198,914,605 $56,824,552,864 -$6,396,401,166 $285.77 888
2021 Q2 222,288,630 $53,060,908,361 +$233,292,685 $238.76 884
2021 Q1 222,036,826 $51,077,860,032 -$83,947,311 $230.11 882
2020 Q4 221,347,782 $46,727,506,080 +$435,423,752 $211.27 828
2020 Q3 219,584,614 $45,288,574,344 +$1,522,216,262 $206.30 767
2020 Q2 212,172,294 $40,853,206,939 +$35,594,675,580 $192.60 698
2020 Q1 27,276,244 $4,501,660,418 +$4,500,378,509 $165.03 91
2019 Q4 16,467 $3,739,228 +$53,531 $208.29 5
2019 Q3 19,042 $4,576,587 +$1,053,408 $193.57 6
2019 Q2 10,768 $2,542,981 +$772 $192.98 3
2019 Q1 10,764 $2,528,908 +$1,366 $170.70 3
2018 Q4 589 $85,617 -$12,000 $145.36 2
2018 Q3 664 $102,576 +$12,000 $153.78 3
2018 Q2 589 $80,793 $137.17 2
2018 Q1 589 $82,654 $140.33 2
2017 Q4 589 $78,926 $134.00 2
2017 Q3 589 $86,053 $146.10 2
2017 Q2 589 $78,307 $132.95 2
2017 Q1 589 $69,908 $118.69 2
2016 Q4 589 $65,691 $111.53 2
2016 Q3 76 $8,549 $112.49 1
2016 Q2 76 $8,301 $109.22 1
2016 Q1 76 $7,938 $104.45 1