Aon PLC (AON) Ownership

345.20 ↓2.51 (-0.72%)
As of December 31, 1969, 7:00pm EST.

Institutional Ownership

Vanguard Group Inc is the biggest individual institutional holder of Aon PLC (AON), owning a total of 20.3 million shares. Combined, the top 32 institutional holders of AON own 69.81% of the company with a total of 150.5 million shares.

In the latest ownership report on June 30th 2025, the top 32 institutional holders increased their combined ownership of AON by 613 thousand shares. 9 institutions bought 3,588,463 total additional shares and increased their ownership by an average of 8.69%. However 10 institutions sold 2,975,118 total shares and decreased their ownership by an average of 6.36%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of Aon PLC increased by a net total of 613,345 in the latest quarter.

Institution Ownership Chart

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Latest Institutional Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Group Inc9.410%2.585%20,289,743511,2922025-06-30
BlackRock Inc7.388%5.507%15,930,760831,4752025-06-30
Capital World Investors5.632%0.386%12,144,23746,6602025-06-30
Morgan Stanley - Brokerage Accounts4.391%8.493%9,467,412741,1082025-06-30
State Street Corp4.232%-0.539%9,124,310-49,4782025-06-30
Massachusetts Financial Services Company4.152%-8.953%8,952,011-880,3162025-06-30
Geode Capital Management, LLC2.592%3.208%5,588,279173,7222025-06-30
JPMorgan Chase & Co2.180%-16.914%4,699,602-956,7212025-06-30
HPS Investment Partners, LLC1.968%-2.222%4,243,321-96,4382025-06-30
Berkshire Hathaway Inc1.901%0.000%4,100,00002025-06-30
Bank of New York Mellon Corp1.627%15.609%3,507,656473,5942025-06-30
Mawer Investment Management Ltd1.378%-9.227%2,971,533-302,0412025-06-30
Polen Capital1.273%-8.714%2,745,627-262,0922025-06-30
Mitsubishi UFJ Asset Management Co.,Ltd1.255%13.233%2,706,904316,3332025-06-30
Eagle Capital Management LLC1.059%-12.931%2,284,259-339,2302025-06-30
Northern Trust Corp1.052%-0.958%2,268,683-21,9362025-06-30
Artisan Partners Limited Partnership1.009%1.883%2,176,04540,2132025-06-30
NORGES BANK0.981%27.332%2,115,346454,0662025-06-30
Neuberger Berman Group LLC0.965%-2.589%2,080,814-55,2932025-06-30
WCM Investment Management0.946%-0.564%2,040,243-11,5732025-06-30

Top Institutions

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Group Inc9.410%2.585%20,289,743511,2922025-06-30
BlackRock Inc7.388%5.507%15,930,760831,4752025-06-30
Capital World Investors5.632%0.386%12,144,23746,6602025-06-30
Morgan Stanley - Brokerage Accounts4.391%8.493%9,467,412741,1082025-06-30
State Street Corp4.232%-0.539%9,124,310-49,4782025-06-30
Massachusetts Financial Services Company4.152%-8.953%8,952,011-880,3162025-06-30
State Street Corporation3.794%0.347%8,242,46328,5212024-03-31
Geode Capital Management, LLC2.592%3.208%5,588,279173,7222025-06-30
JPMorgan Chase & Co2.180%-16.914%4,699,602-956,7212025-06-30
HPS Investment Partners, LLC1.968%-2.222%4,243,321-96,4382025-06-30
Berkshire Hathaway Inc1.901%0.000%4,100,00002025-06-30
Bank of New York Mellon Corp1.627%15.609%3,507,656473,5942025-06-30
Mackenzie Investments1.388%85.786%2,997,5061,384,0852024-12-31
Mawer Investment Management Ltd1.378%-9.227%2,971,533-302,0412025-06-30
Polen Capital1.273%-8.714%2,745,627-262,0922025-06-30
Mitsubishi UFJ Asset Management Co.,Ltd1.255%13.233%2,706,904316,3332025-06-30
Independent Franchise Partners LLP1.114%2.083%2,409,53049,1612024-06-30
Eagle Capital Management LLC1.059%-12.931%2,284,259-339,2302025-06-30
Northern Trust Corp1.052%-0.958%2,268,683-21,9362025-06-30
Sustainable Growth Advisers, LP1.048%-19.908%2,263,783-562,6852024-12-31
Lazard Asset Management LLC1.039%-4.117%2,240,955-96,2192025-03-31
Veritas Asset Management LLP1.028%-26.238%2,220,648-789,9092024-12-31
Artisan Partners Limited Partnership1.009%1.883%2,176,04540,2132025-06-30
Boston Partners Global Investors, Inc0.984%4.205%2,121,60785,6092025-03-31
NORGES BANK0.981%27.332%2,115,346454,0662025-06-30
Neuberger Berman Group LLC0.965%-2.589%2,080,814-55,2932025-06-30
Capital Research & Mgmt Co - Division 30.947%-6.850%2,048,745-150,6632024-09-30
WCM Investment Management0.946%-0.564%2,040,243-11,5732025-06-30
Bank of America Corp0.853%15.221%1,852,049244,6622024-03-31
Longview Partners (Guernsey) Ltd.0.900%-0.859%1,825,402-15,8202023-06-30
GQG Partners LLC0.809%-19.755%1,758,547-432,9152023-12-31
Goldman Sachs Group Inc0.519%15.571%1,120,399150,9542024-12-31

Mutual Fund Ownership

Vanguard US Total Market Shares ETF is the biggest individual fund holder of Aon PLC (AON), owning a total of 6.5 million shares. Combined, the top 39 mutual fund holders of AON own 46.76% of the company with a total of 99.7 million shares.

In the latest ownership report on August 31st 2025, the top 39 fund holders increased their combined ownership of AON by 27 thousand shares. 1 funds bought 32,131 total additional shares and increased their ownership by an average of 1.25%. However 1 funds sold 4,864 total shares and decreased their ownership by an average of 0.32%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding Aon PLC increased by a net total of 27,267 in the latest report.

Mutual Funds Chart

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Latest Mutual Fund Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
SPDR® S&P 500® ETF1.208%1.249%2,605,32732,1312025-08-31
iShares Core S&P 500 ETF1.205%0.000%2,597,90602025-08-31
The Financial Select Sector SPDR® ETF0.713%-0.315%1,537,582-4,8642025-08-31

Top Mutual Funds

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard US Total Market Shares ETF3.028%-0.073%6,540,384-4,7722024-09-30
Vanguard Total Stock Mkt Idx Inv2.991%-2.269%6,449,385-149,7472025-07-31
Vanguard Institutional 500 Index Trust2.848%0.721%6,150,89944,0232025-05-31
Vanguard Instl Ttl Stck Mkt Idx Tr3.013%0.973%6,031,60658,1152023-03-31
Vanguard 500 Index Investor2.479%-12.782%5,345,701-783,4172025-07-31
MFS Large Cap Value (SMA)2.246%35,106,100.000%4,563,8014,563,7882023-06-30
American Funds American Balanced A1.444%0.000%3,112,47002025-06-30
MFS Large Cap Value Equity1.350%-3.302%2,909,891-99,3752025-06-30
MFS Value A1.342%-0.581%2,892,977-16,9142025-07-31
Fidelity 500 Index1.269%0.043%2,737,2571,1742025-07-31
SPDR® S&P 500 ETF1.246%-1.442%2,691,508-39,3702025-03-31
SPDR® S&P 500® ETF Trust1.213%-0.521%2,620,261-13,7162025-03-31
SPDR® S&P 500® ETF1.208%1.249%2,605,32732,1312025-08-31
iShares Core S&P 500 ETF1.205%0.000%2,597,90602025-08-31
MS INVF Global Brands A1.130%0.000%2,437,47102025-07-31
Morgan Stanley Glbl Franchise1.130%11.261%2,437,471246,6942025-06-30
SPDR® S&P 500 ETF Trust1.100%0.701%2,392,04116,6602024-05-30
Fidelity® 500 Index1.181%0.640%2,363,97015,0432023-11-30
MS INVF Global Brands A USD1.048%-1.480%2,277,424-34,2052024-09-30
Vanguard Growth Index Investor0.841%0.913%1,829,30116,5452024-05-31
Financial Select Sector SPDR® ETF0.863%0.730%1,770,54412,8252023-02-28
American Funds Washington Mutual A0.801%0.000%1,727,52102025-06-30
Capital Group Wash Mutual Invtrs Comp0.801%0.000%1,727,52102025-06-30
American Funds Fundamental Invs A0.793%0.000%1,710,24202025-06-30
Capital Group Fundamental Invtrs Comp0.793%0.000%1,710,24202025-06-30
MFS Growth B0.830%0.000%1,684,57702023-06-30
MFS Growth Equity0.830%-8.748%1,684,577-161,4902023-06-30
The Financial Select Sector SPDR® ETF0.713%-0.315%1,537,582-4,8642025-08-31
Capital Group EuroPacific Growth Comp0.711%0.000%1,534,65402025-03-31
American Funds Europacific Growth A0.711%0.000%1,534,65402025-03-31
Capital Group EUPAC Composite0.709%-0.351%1,529,266-5,3882025-06-30
American Funds EUPAC A0.709%-0.351%1,529,266-5,3882025-06-30
Goldman Sachs GQG Ptnrs Intl Opps Instl0.627%-16.487%1,364,245-269,3352023-12-31
Vanguard Institutional Index I0.605%-1.097%1,305,307-14,4792025-07-31
Diamond Hill Large Cap Equity0.602%0.714%1,297,0879,1992025-07-31
WCM Focused International Growth Instl0.588%-12.194%1,271,825-176,6232024-09-30
WCM Inv Mgt Focused Growth Intl0.588%-12.194%1,271,825-176,6232024-09-30
Capital Group New Perspective Comp0.586%0.000%1,263,29602025-06-30
American Funds New Perspective A0.586%0.000%1,263,29602025-06-30

Discussions

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jchonnee7/28/25 07:53pm

$AON lfg!!! So much movement ! Buy n hodl!

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