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Disclosery

AON AON PLC

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Stock (common), issuer CIK 315293

1,252 managers (1,281 13F filers) reported a position in AON shares at 2025-12-31, 189,054,682 shares in all. 88 filers opened a position and 99 filers sold out during the quarter.

Managers
1,252
13F filers
1,281
New
88
Added
425
Reduced
477
Sold out
99
Shares held by filers
189,054,682

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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 holding20,199,051$7.13B+192,095Timeline
BlackRock, Inc.in group BlackRock, Inc.16,236,934$5.73B0.1%+390,34813F-HRTimelineGroup
Capital World Investors12,252,904$4.32B0.59%+176,20713F-HRTimeline
STATE STREET CORPin group STATE STREET CORP9,203,973$3.25B0.11%-25,49113F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…8,545,036$3.02B0.97%-212,65013F-HRTimelineGroup
Dodge & Cox7,852,456$2.77B1.5%+4,387,77313F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY5,570,506$1.97B0.12%-565,88013F-HR/ATimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC5,141,363$1.81B0.11%+28,06613F-HRTimelineGroup
Berkshire Hathaway Incin group Berkshire Hathaway Inc3,602,995$1.27B0.46%-497,00513F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp3,479,061$1.23B0.22%-236,28513F-HRTimelineGroup
NORGES BANK3,275,848$1.16B0.12%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO3,192,216$1.13B0.08%-154,98113F-HRTimelineGroup
FARALLON CAPITAL MANAGEMENT, L.L.C.2,665,238$941M4.89%+387,22113F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
DZ BANK AG Deutsche Zentral Genossensch…in group DZ BANK AG Deutsche Zentral G…2,415,006$852M0.75%+2,388,31413F-HRTimelineGroup
EAGLE CAPITAL MANAGEMENT LLC2,269,414$801M2.49%-14,73713F-HRTimeline
Independent Franchise Partners LLP2,115,523$747M4.75%+19,03713F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP2,099,652$741M0.09%-113,41713F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding2,059,425$727M-440,259Timeline
WCM INVESTMENT MANAGEMENT, LLC1,986,128$708M1.46%-51,71513F-HRTimeline
Veritas Asset Management LLP1,992,453$703M7.19%-61,22013F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 4 filers holding1,981,661$684M+26,941Timeline
POLEN CAPITAL MANAGEMENT LLC1,846,294$652M2.78%-643,87313F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC1,804,303$637M0.47%-526,06013F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp1,635,007$576M0.6%-76,24313F-HRTimelineGroup
Diamond Hill Capital Management, LLC (I…1,596,315$563M2.89%+32,49413F-HRTimeline
Mawer Investment Management Ltd.1,477,693$521M2.92%-1,020,39613F-HRTimeline
Capital International Investorsgroup of 4 filers holding1,444,310$510M-535,401Timeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,409,797$497M0.07%+98,10313F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,360,588$480M0.03%-74,78713F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc1,350,069$476M0.11%-60,27313F-HRTimelineGroup
FMR LLCin group FMR LLC1,341,164$473M0.02%+757,82013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.1,336,129$471M0.04%+86,71713F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,310,740$463M0.07%+15,61913F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC1,286,072$454M0.77%+25,65213F-HRTimelineGroup
Cantillon Capital Management LLCin group Cantillon Capital Management …1,243,018$439M2.37%+9,27713F-HRTimelineGroup
Sustainable Growth Advisers, LP1,221,467$431M2.99%-95,89713F-HRTimeline
Amundiin group Amundi1,217,341$430M0.12%-165,79613F-HRTimelineGroup
Artisan Partners Limited Partnership1,117,428$394M0.6%-149,34213F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC1,108,214$391M0.09%-73,53013F-HRTimelineGroup
Longview Partners (Guernsey) LTDin group Longview Partners (Guernsey) …1,105,784$390M4.07%-50,97013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,040,718$367M0.08%+96,88513F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA954,748$337M0.06%+8,91513F-HRTimelineGroup
FIL Ltdin group FIL Ltd883,757$312M0.23%-44,45613F-HRTimelineGroup
TIAAgroup of 2 filers holding810,662$286M-240,531Timeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\795,630$281M0.09%+182,92313F-HRTimelineGroup
VIKING GLOBAL INVESTORS LPin group VIKING GLOBAL INVESTORS LP783,650$277M0.73%-630,96813F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.760,139$268M0.88%-129,19313F-HRTimelineGroup
USS Investment Management Ltd681,743$241M1.12%+40,96913F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
First Pacific Advisors, LP656,531$232M3.05%+2,08613F-HRTimeline
ALTRINSIC GLOBAL ADVISORS LLC651,207$230M8.24%-31,67913F-HRTimeline
Southpoint Capital Advisors LPin group Southpoint Capital Advisors LP650,000$229M5.33%new13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC636,922$225M0.16%+140,33613F-HRTimelineGroup
California Public Employees Retirement …608,213$215M0.12%-99,75013F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…606,569$214M0.32%-39,50013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC588,544$208M0.08%-85,17413F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/578,391$204M0.02%-35,74813F-HRTimeline
OMERS ADMINISTRATION Corp567,479$200M1.43%-33,93813F-HRTimeline
Swiss National Bank561,340$198M0.12%-29,96013F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth546,204$193M0.22%+436,09313F-HRTimelineGroup
Fiera Capital Corpin group Fiera Capital Corp533,582$188M0.6%-15,75213F-HRTimelineGroup
BLAIR WILLIAM & CO/IL496,307$175M0.47%-33,46613F-HRTimeline
National Pension Service472,500$167M0.12%+52,07713F-HRTimeline
Sumitomo Mitsui Trust Group, Inc.in group Sumitomo Mitsui Trust Group, …470,902$166M0.1%-17,13513F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC466,216$165M0.16%-94,53713F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO461,800$163M0.16%+90,64213F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …456,552$161M0.09%+279,46713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC442,286$156M0.11%-465,33413F-HRTimelineGroup
C WorldWide Group Holding A/Sin group C WorldWide Group Holding A/S432,180$153M2.66%-85,12813F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC430,173$152M0.08%+315,78513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS422,064$149M0.09%+185,29613F-HRTimelineGroup
Douglass Winthrop Advisors, LLC392,615$139M2.42%-9,28513F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management387,013$137M0.26%-459,70213F-HRTimelineGroup
RHUMBLINE ADVISERS383,823$135M0.11%-11,21613F-HRTimeline
Haverford Trust Co351,168$124M1.11%-28,91713F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCgroup of 2 filers holding345,966$122M-69,259Timeline
Bowie Capital Management, LLC344,149$121M5.01%-12,73813F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN340,049$120M0.02%-31,81913F-HRTimelineGroup
NATIXIS ADVISORS, LLCin group Natixis Investment Managers334,511$118M0.17%-21,31513F-HRTimelineGroup
AVIVA PLCin group AVIVA PLC333,454$118M0.2%+6,62213F-HRTimelineGroup
MACKENZIE FINANCIAL CORP328,701$117M0.14%-132,56713F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…318,341$112M0.11%-7,23313F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/315,972$112M0.04%-90,68013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…306,498$108M0.12%+12,82113F-HRTimelineGroup
Cryder Capital Partners LLP295,151$104M6.15%+63,83713F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources290,264$102M0.03%+212,03713F-HRTimelineGroup
BRISTOL JOHN W & CO INC /NY/286,128$101M1.55%+41,38413F-HRTimeline
Wealthspire Advisors, LLC273,596$96.5M0.77%+42,73913F-HRTimeline
LORD, ABBETT & CO. LLC272,046$96M0.29%+22,87813F-HRTimeline
DAVENPORT & Co LLC269,360$95.3M0.52%-2,53213F-HRTimeline
BloombergSen Inc.262,750$92.7M9.79%-20,33413F-HRTimeline
COMGEST GLOBAL INVESTORS S.A.S.in group COMGEST GLOBAL INVESTORS S.A.…256,800$90.6M1.61%+243,70013F-HRTimelineGroup
Woodline Partners LP256,381$90.5M0.35%-23,70413F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding248,481$87.7M-8,650Timeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC246,645$87M0.03%-13,74213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND242,632$85.6M0.11%-75,46413F-HRTimeline
DekaBank Deutsche Girozentrale275,444$85M0.15%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …232,033$81.9M0.07%-15,38913F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC222,425$78.5M0.05%-16,89513F-HRTimelineGroup
WEITZ INVESTMENT MANAGEMENT, INC.218,735$77.2M4.58%+5,28513F-HRTimeline
ALLIANCEBERNSTEIN L.P.218,495$77.1M0.02%-17,26513F-HRTimeline
Scharf Investments, LLC208,111$73.4M1.97%-11,97713F-HRTimeline
Verition Fund Management LLC207,562$73.2M0.4%+1,83113F-HRTimeline
Ensign Peak Advisors, Inc206,485$72.9M0.13%-24,39813F-HR/ATimeline
CapitalatWork S.A.in group CapitalatWork S.A.197,854$69.8M2.13%+5,63613F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC190,679$67.7M0.04%+5,89013F-HR/ATimelineGroup
Gillson Capital LP189,000$66.7M4.36%+48,33913F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.188,218$66.4M0.1%+6,16513F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…181,412$64M0.11%-3,77013F-HRTimeline
NICHOLAS COMPANY, INC.181,402$64M1.12%-2513F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDgroup of 3 filers holding177,030$62.5M+2,531Timeline
Ninety One North America, Inc.176,485$62.3M2.52%+31,17813F-HRTimeline
GFI Investment Counsel Ltd.167,162$59M6.29%-43413F-HR/ATimeline
INTECH INVESTMENT MANAGEMENT LLC156,255$55.1M0.49%+87,79913F-HRTimeline
Prana Capital Management, LP156,157$55.1M2%-184,40513F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…155,300$54.8M0.11%-52213F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc153,289$54.1M0.08%-2,90213F-HRTimelineGroup
YCG, LLC151,443$53.4M4.03%+17913F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP144,432$51M0.05%+85813F-HRTimelineGroup
Petrus Trust Company, LTA144,000$50.8M5.14%+7,48713F-HRTimeline
SG Americas Securities, LLC143,163$50.5M0.07%+134,93713F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS142,585$50.3M0.14%-1,77713F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP139,600$49.3M1%-72,59213F-HRTimeline
Ninety One UK Ltd138,223$48.8M0.1%+24,16113F-HRTimeline
State of Tennessee, Department of Treas…138,801$48.5M0.16%+3,81413F-HRTimeline
Markel Group Inc.in group Markel Group Inc.134,050$47.3M0.38%+4,25013F-HRTimelineGroup
DAVIS R M INC126,495$44.6M0.77%+25313F-HRTimeline
HM PAYSON & CO124,963$44.1M0.62%-8,05813F-HRTimeline
Zurich Insurance Group Ltd/FIin group Zurich Insurance Group Ltd/FI124,889$44.1M0.31%+60,17513F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.123,030$43.4M0.36%+2,38213F-HRTimelineGroup
DANSKE BANK A/S121,060$42.7M0.1%+3,12813F-HRTimeline
TCTC Holdings, LLCin group TCTC Holdings, LLC120,161$42.4M1.27%+10013F-HRTimelineGroup
Onex Canada Asset Management Inc.119,655$42.2M5.86%-50,11913F-HRTimeline
FIDUCIENT ADVISORS LLC119,590$42.2M5.23%-145,57713F-HRTimeline
AMF Tjanstepension AB119,466$42.2M0.26%-7,32613F-HRTimeline
Quantinno Capital Management LP116,315$41M0.08%+43,46713F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…114,797$40.5M0.02%-3,04013F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS112,281$39.6M0.14%+11,94713F-HRTimeline
Chevy Chase Trust Holdings, LLCin group Chevy Chase Trust Holdings, L…112,058$39.5M0.11%-1,07813F-HRTimelineGroup
Cannell & Spears LLC110,849$39.1M0.73%+2,73613F-HRTimeline
Night Owl Capital Management, LLC108,774$38.4M4.21%+1,75113F-HRTimeline
M.D. Sass, LLC108,531$38.3M3.02%+1,23313F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD108,259$38.2M0.09%-1,18413F-HRTimeline
Ironvine Capital Partners, LLC107,680$38M3.8%+2,30513F-HRTimeline
Broad Run Investment Management, LLC106,567$37.6M6.98%-5013F-HRTimeline
Korea Investment CORP103,939$36.7M0.07%-21,61413F-HRTimeline
Central Securities Corp100,000$35.3M2.84%013F-HRTimeline
Nippon Life Global Investors Americas, …98,970$34.9M1.45%+4,24013F-HRTimeline
Obermeyer Wealth Partners98,342$34.7M1.59%-2,73113F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…97,642$34.5M0.07%-2,19413F-HRTimeline
APG Asset Management N.V.in group APG Asset Management N.V.114,203$34.3M0.1%-10,20013F-HRTimelineGroup
Asset Management One Co., Ltd.94,545$33.7M0.09%-21713F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…93,966$33.2M0.03%+1,91713F-HRTimelineGroup
GATEWAY INVESTMENT ADVISERS LLC93,696$33.1M0.31%+45213F-HRTimeline
KLP KAPITALFORVALTNING AS93,672$33.1M0.13%-68013F-HRTimeline
LFL Advisers, LLC92,657$32.7M10.73%+2,51113F-HRTimeline
Advisors Capital Management, LLC90,353$31.9M0.37%+98913F-HRTimeline
CIBC Bancorp USA Inc.group of 2 filers holding89,868$31.7M+66,938Timeline
CIBC Asset Management Inc89,600$31.6M0.08%-70,31213F-HRTimeline
DUDLEY & SHANLEY, INC.88,782$31.3M5.04%+5013F-HRTimeline
Treasurer of the State of North Carolina87,975$31M0.1%-6,43013F-HRTimeline
Swedbank ABin group Swedbank AB87,409$30.8M0.03%+4,49313F-HR/ATimelineGroup
Summit Trail Advisors, LLC86,028$30.4M0.52%-26,27313F-HRTimeline
ROYAL LONDON ASSET MANAGEMENT LTD85,994$30.3M0.06%-54713F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…84,663$29.9M0.09%+21913F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…84,227$29.7M0.01%-360,98113F-HRTimelineGroup
Walleye Capital LLCgroup of 2 filers holding82,362$29.1M+81,021Timeline
Gotham Asset Management, LLC81,509$28.8M0.11%-1,09113F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC80,290$28.3M0.12%-40,76913F-HRTimelineGroup
TD Asset Management Inc78,161$27.6M0.02%+8213F-HRTimeline
Canoe Financial LP77,749$27.4M0.37%-1,48013F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP76,111$27M0.04%+3,66713F-HR/ATimelineGroup
Mn Services Vermogensbeheer B.V.75,686$26.7M0.16%+2,08613F-HRTimeline
LPL Financial LLC75,490$26.6M0.01%+5,10213F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP73,929$26.4M0.02%-16,63113F-HRTimeline
Schonfeld Strategic Advisors LLC71,374$25.2M0.13%-44,13513F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…71,293$25.2M0.09%-83213F-HRTimelineGroup
BARINGS LLCin group BARINGS LLC71,077$25.1M0.46%+11,44413F-HRTimelineGroup
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A69,537$24.5M0.07%+9,46513F-HRTimelineGroup
Lansforsakringar Fondforvaltning AB (pu…68,951$24.3M0.12%+5,13313F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC67,645$23.9M0.01%+99313F-HRTimeline
Handelsbanken Fonder AB67,034$23.7M0.07%+5,58513F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.66,645$23.5M0.07%-181,33213F-HRTimelineGroup
STRS OHIO65,582$23.1M0.09%-3,91513F-HRTimeline
Rafferty Asset Management, LLC65,568$23.1M0.08%-6,19213F-HRTimeline
JLB & ASSOCIATES INC64,912$22.9M3.09%new13F-HRTimeline
Saraza Management, LP64,700$22.8M8.82%+2,20013F-HRTimeline
Financiere des Professionnels - Fonds d…63,703$22.5M1.27%+6,74213F-HRTimeline
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…63,195$22.3M0.03%+6,72113F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/61,526$21.7M0.02%-99,99813F-HRTimelineGroup
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…61,365$21.7M0.18%-15,52013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…60,797$21.5M0.1%-1,79413F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding59,853$21.1M+6,527Timeline
FRONTIER CAPITAL MANAGEMENT CO LLC58,593$20.7M0.22%-80,86013F-HRTimeline
MANAGED ASSET PORTFOLIOS, LLC57,831$20.4M2.46%+2,95313F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM57,655$20.3M0.11%-2,28513F-HRTimeline
Resona Asset Management Co.,Ltd.in group Resona Asset Management Co.,L…57,523$20.3M0.1%-4,23913F-HRTimelineGroup
Avalon Trust Co56,886$20.1M1.3%+17,30113F-HRTimeline
Czech National Bank56,676$20M0.13%+1,91113F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM56,258$19.9M0.1%-2,10013F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT56,124$19.8M0.22%+53513F-HRTimeline