AON PLC - COM (AON)

CUSIP: 037389103

Q1 2025 13F Holders as of 31 Mar 2025

Security type / class
Equity / COM
Total 13F shares
12,654
Total 13F value
$5,050,107
Share change
0
SEC-reported price per share
$399.09
Number of holders
3

Security key

037389103

Report period

Q1 2025

Institutions

3

Top holders

3

AON full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 Aon plc SEC filings Aon plc company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of AON - AON PLC - COM (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
MASSACHUSETTS FINANCIAL S...
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Dec 2024
13F 13D/G Lead comparable stake: 4.6% 13D/G row: MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Showing 1-6 of 15 holder rows.

Quick read

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ leads the comparable SEC ownership view at 4.6%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s linked filing trail.
Comparable ownership Top 5
MASSACHUSETTS FINANCIAL SERVICES ... 4.6%
VANGUARD GROUP INC 9%
BlackRock, Inc. 6.8%
Capital World Investors 5.6%
STATE STREET CORP 4.2%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F 13D/G
Company · Massachusetts Financial Services Company
13F 13D/G
4.6%
from 13D/G
$4,172,118,928
11,616,324 shares
 — 31 Dec 2024
VANGUARD GROUP INC
13F
Company
13F
9%
$7,010,714,129
19,519,752 shares
 — 31 Dec 2024
BlackRock, Inc.
13F
Company
13F
6.8%
$5,300,792,376
14,758,861 shares
 — 31 Dec 2024
Capital World Investors
13F
Company
13F
5.6%
$4,344,837,719
12,097,257 shares
 — 31 Dec 2024
STATE STREET CORP
13F
Company
13F
4.2%
$3,265,030,569
9,090,922 shares
 — 31 Dec 2024
MORGAN STANLEY
13F
Company
13F
3.9%
$3,011,299,123
8,384,281 shares
 — 31 Dec 2024
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
3
Shares
12,654
Rows available
3
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2025 vs Q1 2026 Across Filers

Q1 2026 holders
3
Q1 2025 holders
3
Holder diff
0
Investor Q1 2026 Shares Q1 2025 Shares Share Diff Share Chg % Q1 2026 value Q1 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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