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Disclosery

AON AON PLC

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Stock (common), issuer CIK 315293

1,217 managers (1,247 13F filers) reported a position in AON shares at 2025-09-30, 185,929,870 shares in all. 116 filers opened a position and 86 filers sold out during the quarter.

Managers
1,217
13F filers
1,247
New
116
Added
477
Reduced
401
Sold out
86
Shares held by filers
185,929,870

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 2 filers holding20,006,956$7.13B-309,343Timeline
BlackRock, Inc.in group BlackRock, Inc.15,846,586$5.65B0.1%-84,17413F-HRTimelineGroup
Capital World Investors12,076,697$4.31B0.59%-67,54013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP9,229,464$3.29B0.11%+105,15413F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…8,757,686$3.12B0.97%-194,32513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY6,136,386$2.19B0.13%-3,331,02613F-HR/ATimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC5,113,297$1.82B0.12%-474,98213F-HRTimelineGroup
Berkshire Hathaway Incin group Berkshire Hathaway Inc4,100,000$1.46B0.55%013F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp3,715,346$1.32B0.24%+207,69013F-HRTimelineGroup
Dodge & Cox3,464,683$1.24B0.67%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO3,347,197$1.19B0.08%-1,352,40513F-HR/ATimelineGroup
UBS Group AGgroup of 2 filers holding2,499,684$891M-263,271Timeline
Mawer Investment Management Ltd.2,498,089$891M4.63%-473,44413F-HRTimeline
POLEN CAPITAL MANAGEMENT LLC2,490,167$888M2.88%-255,46013F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC2,330,363$831M0.61%+249,54913F-HRTimelineGroup
EAGLE CAPITAL MANAGEMENT LLC2,284,151$814M2.59%-10813F-HRTimeline
FARALLON CAPITAL MANAGEMENT, L.L.C.2,278,017$812M4.59%+291,60013F-HR/ATimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP2,213,069$789M0.1%-55,61413F-HRTimelineGroup
Independent Franchise Partners LLP2,096,486$748M4.93%+615,57013F-HRTimeline
Veritas Asset Management LLP2,053,673$732M7.82%+332,68513F-HRTimeline
WCM INVESTMENT MANAGEMENT, LLC2,037,843$723M1.5%-2,40013F-HRTimeline
Capital International Investorsgroup of 4 filers holding1,979,711$706M+72,621Timeline
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding1,944,778$693M-877,568Timeline
Boston Partnersin group Boston Trust Walden Corp1,711,250$611M0.63%+230,09813F-HRTimelineGroup
Diamond Hill Capital Management, LLC (I…1,563,821$558M2.65%-10,69013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,435,375$512M0.04%+11,38713F-HR/ATimelineGroup
Amundiin group Amundi1,383,137$506M0.16%+393,95113F-HRTimelineGroup
VIKING GLOBAL INVESTORS LPin group VIKING GLOBAL INVESTORS LP1,414,618$504M1.31%new13F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc1,410,342$503M0.11%+103,42713F-HRTimelineGroup
Sustainable Growth Advisers, LP1,317,364$470M2.75%-529,77613F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,311,694$468M0.07%+52,78513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,295,121$462M0.07%+11,10013F-HRTimelineGroup
Artisan Partners Limited Partnership1,266,770$452M0.65%-909,27513F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC1,260,420$449M0.61%-562,46613F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.1,249,412$446M0.07%+1,54713F-HRTimelineGroup
Cantillon Capital Management LLCin group Cantillon Capital Management …1,233,741$440M2.42%-13,61313F-HR/ATimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC1,181,744$421M0.1%+121,11613F-HRTimelineGroup
Longview Partners (Guernsey) LTDin group Longview Partners (Guernsey) …1,156,754$412M4.31%-151,20713F-HRTimelineGroup
TIAAgroup of 2 filers holding1,051,193$375M+3,401Timeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA945,833$337M0.06%+296,00613F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP943,833$337M0.07%+47,33513F-HRTimelineGroup
FIL Ltdin group FIL Ltd928,213$331M0.26%-63,44313F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC907,620$324M0.26%+778,13613F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.889,332$317M1%+428,36113F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management846,715$302M0.61%new13F-HRTimelineGroup
California Public Employees Retirement …707,963$252M0.15%-26,53613F-HRTimeline
ALTRINSIC GLOBAL ADVISORS LLC682,886$244M9.01%-9,74713F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC673,718$240M0.09%+22,87213F-HR/ATimelineGroup
First Pacific Advisors, LP654,445$233M3.23%+2,42613F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…646,069$230M0.36%+343,80013F-HRTimelineGroup
USS Investment Management Ltd640,774$228M1.04%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/614,139$219M0.02%-7,43713F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\612,707$218M0.07%+202,32613F-HRTimelineGroup
OMERS ADMINISTRATION Corp601,417$214M1.54%013F-HRTimeline
Swiss National Bank591,300$211M0.12%+2,90013F-HRTimeline
FMR LLCin group FMR LLC583,344$208M0.01%-874,38413F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP562,977$201M0.15%+10,37213F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC560,753$200M0.2%-117,88813F-HRTimelineGroup
Fiera Capital Corpin group Fiera Capital Corp549,334$196M0.63%+27,53013F-HRTimelineGroup
BLAIR WILLIAM & CO/IL529,773$189M0.5%-38,21413F-HRTimeline
C WorldWide Group Holding A/Sin group C WorldWide Group Holding A/S517,308$184M2.84%-103,35213F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC496,586$177M0.14%+489,46313F-HRTimelineGroup
Sumitomo Mitsui Trust Group, Inc.in group Sumitomo Mitsui Trust Group, …488,037$174M0.1%+24,24113F-HRTimelineGroup
MACKENZIE FINANCIAL CORP461,268$164M0.2%-222,28813F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…445,208$159M0.03%-668,52513F-HRTimelineGroup
National Pension Service420,423$150M0.12%+3,96213F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding415,225$148M-15,084Timeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/406,652$145M0.06%+82,97013F-HRTimelineGroup
Douglass Winthrop Advisors, LLC401,900$143M2.5%+4,81313F-HRTimeline
RHUMBLINE ADVISERS395,039$141M0.11%+65613F-HRTimeline
Haverford Trust Co380,085$136M1.22%-5,21713F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN371,868$133M0.03%-35,02813F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO371,158$132M0.14%-33,81113F-HRTimelineGroup
NorthCoast Asset Management LLC358,759$128M0.5%+42,75813F-HRTimeline
Bowie Capital Management, LLC356,887$127M5.73%+84,44613F-HRTimeline
NATIXIS ADVISORS, LLCin group Natixis Investment Managers355,826$127M0.19%+101,92113F-HRTimelineGroup
Prana Capital Management, LP340,562$121M4.05%-176,94513F-HRTimeline
AVIVA PLCin group AVIVA PLC326,832$117M0.21%+15,29213F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…325,574$116M0.12%+12,95613F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND318,096$113M0.15%-15,02013F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson314,591$112M0.05%+155,97413F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…293,677$105M0.12%+2,01713F-HRTimelineGroup
BloombergSen Inc.283,084$101M8.57%-2,94313F-HRTimeline
Woodline Partners LP280,085$99.9M0.47%-132,86813F-HRTimeline
DekaBank Deutsche Girozentrale275,444$97.3M0.16%013F-HRTimeline
DAVENPORT & Co LLC271,892$96.8M0.52%-4,23313F-HRTimeline
FIDUCIENT ADVISORS LLC265,167$94.6M11.05%-73,03313F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC260,387$92.8M0.03%+8,35713F-HRTimelineGroup
Assenagon Asset Management S.A.258,654$92.2M0.14%+85,04713F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding257,131$91.7M-4,713Timeline
LORD, ABBETT & CO. LLC249,168$88.8M0.26%+3,72913F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.247,977$88.4M0.27%-128,73713F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …247,422$88.2M0.07%-63,89213F-HRTimelineGroup
BRISTOL JOHN W & CO INC /NY/244,744$87.3M1.38%-4,79813F-HRTimeline
CITIGROUP INCin group CITIGROUP INC239,320$85.3M0.06%+42,65613F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS236,768$84.4M0.07%-58,78313F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.235,760$84.1M0.03%-56,45013F-HRTimeline
Cryder Capital Partners LLP231,314$82.5M4.55%013F-HRTimeline
Ensign Peak Advisors, Inc230,883$82.3M0.14%-8,44313F-HR/ATimeline
Wealthspire Advisors, LLC230,857$82.3M0.43%-2,30513F-HRTimeline
Scharf Investments, LLC220,088$78.5M1.97%-9,36613F-HRTimeline
WEITZ INVESTMENT MANAGEMENT, INC.213,450$76.1M4.13%013F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP212,192$75.7M1.5%+11,16813F-HRTimeline
Verition Fund Management LLC205,731$73.4M0.42%-48,14513F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC202,749$72.3M0.08%+164,96213F-HRTimelineGroup
CapitalatWork S.A.in group CapitalatWork S.A.192,218$68.5M1.99%+13,49313F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…185,182$66M0.12%-4,44013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC184,789$65.6M0.04%+16,03013F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.182,053$64.9M0.14%new13F-HRTimelineGroup
NICHOLAS COMPANY, INC.181,427$64.7M1.1%013F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …177,085$63.1M0.04%+98,33213F-HRTimelineGroup
NOMURA ASSET MANAGEMENT CO LTDgroup of 2 filers holding174,499$62.2M-2,873Timeline
Onex Canada Asset Management Inc.169,774$60.5M7.65%+12,38813F-HRTimeline
GFI Investment Counsel Ltd.167,596$59.8M6.22%+98613F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/161,524$57.6M0.07%-67,67913F-HRTimelineGroup
CIBC Asset Management Inc159,912$57M0.16%-19,67713F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…155,822$55.6M0.11%-55813F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc156,191$55.4M0.09%+4,00513F-HRTimelineGroup
YCG, LLC151,264$53.9M4.05%+5,07213F-HRTimeline
Ninety One North America, Inc.145,307$51.8M2.35%+30,52213F-HR/ATimeline
STOREBRAND ASSET MANAGEMENT AS144,362$51.5M0.14%+45513F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP143,574$51.2M0.05%-74013F-HRTimelineGroup
Gillson Capital LP140,661$50.2M4.35%+49,78013F-HRTimeline
FRONTIER CAPITAL MANAGEMENT CO LLC139,453$49.7M0.45%-47,39113F-HRTimeline
Petrus Trust Company, LTA136,513$48.7M5.33%+16,92813F-HRTimeline
State of Tennessee, Department of Treas…134,987$48.1M0.16%+2,92913F-HRTimeline
HM PAYSON & CO133,021$47.4M0.68%-48513F-HRTimeline
Markel Group Inc.in group Markel Group Inc.129,800$46.3M0.38%013F-HRTimelineGroup
AMF Tjanstepension AB126,792$45.2M0.29%013F-HR/ATimeline
DAVIS R M INC126,242$45M0.79%+98613F-HRTimeline
Korea Investment CORP125,553$44.8M0.09%+20,04313F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC121,059$43.2M0.18%+7,40213F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.120,648$43M0.39%+118,04713F-HRTimelineGroup
TCTC Holdings, LLCin group TCTC Holdings, LLC120,061$42.8M1.27%013F-HRTimelineGroup
DANSKE BANK A/S117,932$42.1M0.1%+13,05013F-HR/ATimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…117,837$42M0.03%+3,11913F-HRTimelineGroup
Schonfeld Strategic Advisors LLC115,509$41.2M0.29%+43,73313F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC114,388$40.7M0.03%+72,26313F-HRTimelineGroup
Ninety One UK Ltd114,062$40.7M0.09%+56,11313F-HR/ATimeline
Chevy Chase Trust Holdings, LLCin group Chevy Chase Trust Holdings, L…113,136$40.3M0.11%-3,99913F-HRTimelineGroup
Summit Trail Advisors, LLC112,301$40M0.55%-2,07413F-HRTimeline
Qube Research & Technologies Ltd110,287$39.3M0.06%-114,49513F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth110,111$39.2M0.06%+10,06213F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD109,443$39M0.09%+3,73713F-HRTimeline
Cannell & Spears LLC108,113$38.6M0.73%-21013F-HRTimeline
Ceredex Value Advisors LLC107,773$38.4M0.89%-28,34013F-HR/ATimeline
M.D. Sass, LLC107,298$38.3M3.12%-3,70713F-HRTimeline
Night Owl Capital Management, LLC107,023$38.2M4.16%+93813F-HRTimeline
Broad Run Investment Management, LLC106,617$38M6.22%-6,62013F-HRTimeline
HRT FINANCIAL LP105,943$37.8M0.14%new13F-HRTimeline
APG Asset Management N.V.in group APG Asset Management N.V.124,403$37.8M0.11%-69713F-HRTimelineGroup
Ironvine Capital Partners, LLC105,375$37.6M3.74%-37113F-HRTimeline
Border to Coast Pensions Partnership Ltd102,557$36.6M0.64%013F-HRTimeline
Obermeyer Wealth Partners101,073$36M1.69%-1,42913F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS100,334$35.8M0.14%+4,82213F-HRTimeline
Central Securities Corp100,000$35.7M2.94%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…99,836$35.6M0.08%+3,76113F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC98,196$35M0.07%+33,18913F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding95,683$34.1M-1,258,272Timeline
Asset Management One Co., Ltd.94,762$33.8M0.1%+4,81213F-HRTimeline
Nippon Life Global Investors Americas, …94,730$33.8M1.42%+59,62013F-HRTimeline
Treasurer of the State of North Carolina94,405$33.7M0.1%-3,67913F-HRTimeline
KLP KAPITALFORVALTNING AS94,352$33.6M0.13%+9,10013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 3 filers holding94,252$33.6M-109,536Timeline
GATEWAY INVESTMENT ADVISERS LLC93,244$33.2M0.32%-12413F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…92,049$32.8M0.03%+51613F-HRTimelineGroup
LFL Advisers, LLC90,146$32.1M11.13%+2,61513F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP90,560$32.1M0.03%-2,52313F-HRTimeline
Advisors Capital Management, LLC89,364$31.9M0.39%+1,80813F-HRTimeline
DUDLEY & SHANLEY, INC.88,732$31.6M5.09%+10013F-HRTimeline
ROYAL LONDON ASSET MANAGEMENT LTD86,541$30.9M0.07%-30713F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…84,444$30.1M0.1%-2,28213F-HRTimeline
Swedbank ABin group Swedbank AB82,916$29.6M0.03%+24,42913F-HRTimelineGroup
Gotham Asset Management, LLC82,600$29.5M0.13%+47,90013F-HRTimeline
CIBC Bancorp USA Inc.group of 2 filers holding81,111$28.9M+58,433Timeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.79,240$28.3M0.02%-93,72913F-HRTimelineGroup
Canoe Financial LP79,229$28.3M0.4%-7,60013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources78,227$27.9M0.01%+7,34013F-HRTimelineGroup
TD Asset Management Inc78,079$27.8M0.02%-10213F-HRTimeline
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…76,885$27.4M0.24%+3,80013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…73,451$27M0.04%+46,34713F-HRTimeline
Mn Services Vermogensbeheer B.V.73,600$26.2M0.17%+90013F-HRTimeline
Quantinno Capital Management LP72,848$26M0.07%+32,80413F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP72,444$25.8M0.04%-8,10213F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…72,125$25.7M0.09%+6,50613F-HRTimelineGroup
Rafferty Asset Management, LLC71,760$25.6M0.08%-3013F-HRTimeline
Caisse de depot et placement du Quebec71,268$25.4M0.05%new13F-HRTimeline
TWINBEECH CAPITAL LP70,956$25.3M1%new13F-HRTimeline
LPL Financial LLC70,388$25.1M0.01%+9,17013F-HRTimeline
STRS OHIO69,497$24.8M0.09%-1,74213F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC68,456$24.4M0.22%+22,89913F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…67,536$24.1M0.04%+58,92913F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC66,652$23.8M0.01%-2,04513F-HRTimeline
Zurich Insurance Group Ltd/FIin group Zurich Insurance Group Ltd/FI64,714$23.1M0.16%new13F-HRTimelineGroup
Lansforsakringar Fondforvaltning AB (pu…63,818$22.8M0.12%+1,89113F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…62,591$22.3M0.11%-1,16413F-HRTimelineGroup
Saraza Management, LP62,500$22.3M7.94%-19,25013F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…61,762$22M0.1%+2413F-HRTimelineGroup
Handelsbanken Fonder AB61,449$21.9M0.07%+97013F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A60,072$21.4M0.07%13F-HRTimelineGroup