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 ↗

ARTHUR J GALLAGHER & CO · common stock (filed as COM) · Q1 2026 · 14 members disclosed AJG ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 982 holders are listed, largest first
982
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$46.6B
holders whose share count rose or who opened the position (new + add), by shares
450
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
163
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 AJG ranked by reported value, 1–25 of 982 holders
#FilerReported valueSharesΔ sharesChange
1JPMORGAN CHASE & CO$4.2B19,568,047−745,202TRIM
2BlackRock, Inc.$4.2B19,307,796+68,175ADD
3VANGUARD CAPITAL MANAGEMENT LLC$3.6B16,699,898—NO PRIOR
4FMR LLC$3.2B14,620,963−489,719TRIM
5Capital World Investors$3.0B13,817,720+1,204,349ADD
6VANGUARD PORTFOLIO MANAGEMENT LLC$2.7B12,419,279—NO PRIOR
7STATE STREET CORP$2.4B10,973,921+20,323ADD
8DODGE & COX$1.6B7,354,915+6,474,330ADD
9GEODE CAPITAL MANAGEMENT, LLC$1.4B6,243,640+229,444ADD
10MORGAN STANLEY$878M4,056,175−3,717,633TRIM
11PRINCIPAL FINANCIAL GROUP INC$702M3,242,088+409,145ADD
12Capital Research Global Investors$645M2,980,131+1,431,658ADD
13EAGLE CAPITAL MANAGEMENT LLC$577M2,665,572+2,665,572NEW
14Capital International Investors$562M2,596,653−3,683,802TRIM
15WELLINGTON MANAGEMENT GROUP LLP$560M2,583,359−382,624TRIM
16GTCR LLC$514M2,373,773+2,373,773NEW
17WCM INVESTMENT MANAGEMENT, LLC$510M2,362,513−17,781TRIM
18NORTHERN TRUST CORP$483M2,229,829−443TRIM
19CHARLES SCHWAB INVESTMENT MANAGEMENT INC$457M2,109,463+65,823ADD
20Janus Henderson Group Ltd.$427M1,970,990+101,431ADD
21FRANKLIN RESOURCES INC$423M1,954,100+1,563,789ADD
22BANK OF AMERICA CORP /DE/$402M1,854,488+346,409ADD
23Invesco Ltd.$372M1,715,812−17,357TRIM
24BROWN ADVISORY INC$342M1,580,307−447,622TRIM
25UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$314M1,449,869+3,100ADD
Show the top 500 of 982 holders
Truncated by Public Filings. Top 500 of 982 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 · AJG

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

Adding
1 Gotham Asset Management $13.8M held
Trimming
1 Viking Global Investors $158M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · ARTHUR J GALLAGHER & CO

Merged timeline of congressional filings and notable-manager moves on AJG
DateWhoChangeSize
2026-05-15Gotham Asset Management 13FADD+18,343 sh
2026-05-15Viking Global Investors 13FTRIM−313,536 sh

2 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.