Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

AON PLC · SHS CL A · Q1 2026 · 13 members disclosed AON ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 916 holders are listed, largest first
916
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$50.2B
holders whose share count rose or who opened the position (new + add), by shares
459
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
124
FILING WINDOW OPEN
Q3 2026 filings are due by 2026-11-16 — figures for that quarter will change; missing filers are not zeros.

Holders — quarter ended 2026-03-31

by reported value · Δ shares vs 2025-12-31Holders rank by reported value. The change kind — new, add, trim or exit — is read from the share count against the prior quarter, never from the reported value.
13F holders of AON ranked by reported value, 1–25 of 916 holders
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$5.2B16,148,507−88,427TRIM
2VANGUARD CAPITAL MANAGEMENT LLC$4.4B13,581,756—NO PRIOR
3Capital World Investors$3.7B11,477,788−775,116TRIM
4STATE STREET CORP$3.0B9,219,773+15,800ADD
5MASSACHUSETTS FINANCIAL SERVICES CO /MA/$2.8B8,358,097−186,939TRIM
6DODGE & COX$2.6B8,116,095+263,639ADD
7MORGAN STANLEY$2.1B6,374,945+804,439ADD
8VANGUARD PORTFOLIO MANAGEMENT LLC$1.5B4,559,035—NO PRIOR
9DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$952M2,948,410+533,404ADD
10Independent Franchise Partners LLP$835M2,588,002+472,479ADD
11Mitsubishi UFJ Asset Management Co., Ltd.$812M2,516,637+703,749ADD
12FARALLON CAPITAL MANAGEMENT, L.L.C.$811M2,512,638—NO PRIOR
13NORTHERN TRUST CORP$672M2,082,105−17,547TRIM
14WCM INVESTMENT MANAGEMENT, LLC$633M1,952,379−33,749TRIM
15Boston Partners$631M1,955,032+320,025ADD
16Artisan Partners Limited Partnership$531M1,644,152+526,724ADD
17BANK OF AMERICA CORP /DE/$511M1,582,680+222,092ADD
18Veritas Asset Management LLP$491M1,520,277−472,176TRIM
19Amundi$485M1,502,890+285,549ADD
20Invesco Ltd.$480M1,486,623+150,494ADD
21CHARLES SCHWAB INVESTMENT MANAGEMENT INC$437M1,355,094+44,354ADD
22POLEN CAPITAL MANAGEMENT LLC$437M1,354,053−492,241TRIM
23Legal & General Group Plc$433M1,341,222−8,847TRIM
24Mawer Investment Management Ltd.$412M1,277,088−200,605TRIM
25UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$407M1,262,123+22,815ADD
Show the top 500 of 916 holders
Truncated by Public Filings. Top 500 of 916 holders shown; the rest are on EDGAR. Method ↗
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · AON

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Use of congressional disclosure reports for commercial purposes, credit decisions or solicitation is restricted by 5 U.S.C. §13107(c).

Notable managers · quarter ended 2026-03-31

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · AON PLC

Merged timeline of congressional filings and notable-manager moves on AON
DateWhoChangeSize
2026-05-15Viking Global Investors 13FADD+303,464 sh
2026-05-15Gotham Asset Management 13FADD+7,296 sh
2026-05-15Tudor Investment Corp 13FNEW+61,000 sh
2026-05-15Bridgewater Associates 13FADD+6,851 sh
2026-05-15Berkshire Hathaway 13FEXIT−3,602,995 sh
2026-05-15Moore Capital Management 13FEXIT−139,600 sh
2026-05-14Baupost Group 13FNEW+769,000 sh
2026-05-01Markel Group 13FADD+1,750 sh

8 newest, by filing date · 13F rows are quarter-end snapshots, not trades

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings: a position may have changed or closed since the quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars; each record notes its original unit.

Affiliated managers may report the same position, so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice.