Who owns Arthur J. Gallagher (AJG)
Which tracked institutional funds hold AJG, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AJG company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
356 tracked funds added or opened AJG while 204 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
AJG’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp gap the other way — the median holder sizes AJG more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AJG divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 1219 tracked filers holding AJG, 593 increased or opened the position and 644 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in AJG between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 62
- Jupiter Topco LLC$445M
- Brave Warrior Advisors, LLC$295M
- Global Retirement Partners, LLC$101M
- VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.$95M
- MAIRS & POWER INC$72M
- Prana Capital Management, LP$51M
Full exits 92
- JANUS HENDERSON GROUP PLC$427M
- T. Rowe Price Investment Management, Inc.$214M
- Amundi$204M
- VIKING GLOBAL INVESTORS LP$158M
- LORD, ABBETT & CO. LLC$120M
- NATIXIS ADVISORS, LLC$70M
Largest adds
- FMR LLC$1.1B
- BlackRock, Inc.$1.1B
- DODGE & COX$557M
- EAGLE CAPITAL MANAGEMENT LLC$545M
- MANUFACTURERS LIFE INSURANCE COMPANY, THE$370M
- VANGUARD CAPITAL MANAGEMENT LLC$235M
Largest trims
- JPMORGAN CHASE & CO$965M
- MORGAN STANLEY$283M
- WELLINGTON MANAGEMENT GROUP LLP$265M
- Boston Partners$173M
- ALLIANCEBERNSTEIN L.P.$145M
- CITADEL ADVISORS LLC$138M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 19,822,870 | $4.6B | 9.4% | 2026-Q2 |
| FMR LLC added | 18,645,620 | $4.3B | 8.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 16,777,183 | $3.9B | 7.9% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 14,356,764 | $3.3B | 6.7% | 2026-Q2 |
| Capital World Investors trimmed | 12,511,991 | $2.9B | 5.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 12,454,725 | $2.9B | 5.9% | 2026-Q2 |
| STATE STREET CORP added | 11,303,790 | $2.6B | 5.3% | 2026-Q2 |
| DODGE & COX added | 9,363,634 | $2.1B | 4.4% | 2026-Q2 |
| NORGES BANK added | 6,733,790 | $1.5B | 3.2% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 6,298,870 | $1.4B | 3.0% | 2026-Q2 |
| EAGLE CAPITAL MANAGEMENT LLC added | 4,890,612 | $1.1B | 2.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 3,494,796 | $802M | 1.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,818,022 | $647M | 1.3% | 2026-Q2 |
| MORGAN STANLEY trimmed | 2,591,858 | $595M | 1.2% | 2026-Q2 |
| Capital Research Global Investors trimmed | 2,585,853 | $594M | 1.2% | 2026-Q2 |
| WCM INVESTMENT MANAGEMENT, LLC added | 2,425,562 | $551M | 1.1% | 2026-Q2 |
| GTCR LLC | 2,373,773 | $545M | 1.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 2,219,141 | $509M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 2,204,733 | $506M | 1.0% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,156,506 | $495M | 1.0% | 2026-Q2 |
| Capital International Investors trimmed | 2,002,580 | $460M | 0.9% | 2026-Q2 |
| Jupiter Topco LLC new | 1,940,663 | $445M | 0.9% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 1,917,615 | $440M | 0.9% | 2026-Q2 |
| Invesco Ltd. added | 1,750,848 | $402M | 0.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,540,997 | $354M | 0.7% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,453,774 | $334M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 1,442,494 | $331M | 0.7% | 2026-Q2 |
| First Pacific Advisors, LP added | 1,336,290 | $307M | 0.6% | 2026-Q2 |
| Legal & General Group Plc trimmed | 1,306,295 | $300M | 0.6% | 2026-Q2 |
| Brave Warrior Advisors, LLC new | 1,285,022 | $295M | 0.6% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 1,281,475 | $294M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 1,260,984 | $289M | 0.6% | 2026-Q2 |
| BROWN ADVISORY INC trimmed | 1,229,898 | $282M | 0.6% | 2026-Q2 |
| FIL Ltd trimmed | 1,125,965 | $258M | 0.5% | 2026-Q2 |
| UBS Group AG added | 1,064,498 | $244M | 0.5% | 2026-Q2 |
| BECK MACK & OLIVER LLC trimmed | 1,061,905 | $244M | 0.5% | 2026-Q2 |
| BROWN BROTHERS HARRIMAN & CO trimmed | 1,000,945 | $230M | 0.5% | 2026-Q2 |
| Guinness Asset Management LTD trimmed | 851,348 | $195M | 0.4% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 833,230 | $191M | 0.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 826,025 | $190M | 0.4% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP added | 813,014 | $187M | 0.4% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 799,003 | $183M | 0.4% | 2026-Q2 |
| Focus Partners Wealth trimmed | 771,225 | $177M | 0.4% | 2026-Q2 |
| COOKE & BIELER LP added | 769,623 | $177M | 0.4% | 2026-Q2 |
| CIBC Bancorp USA Inc. added | 761,528 | $175M | 0.4% | 2026-Q2 |
| Nuveen, LLC added | 725,837 | $167M | 0.3% | 2026-Q2 |
| Swiss National Bank trimmed | 725,060 | $166M | 0.3% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 716,424 | $164M | 0.3% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 693,775 | $159M | 0.3% | 2026-Q2 |
| BLS Capital Fondsmaeglerselskab A/S added | 659,908 | $151M | 0.3% | 2026-Q2 |
| Unisphere Establishment added | 639,700 | $147M | 0.3% | 2026-Q2 |
| Tidal Investments LLC added | 638,601 | $147M | 0.3% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 632,135 | $145M | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 627,989 | $144M | 0.3% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. trimmed | 625,018 | $143M | 0.3% | 2026-Q2 |
| Stonehage Fleming Financial Services Holdings Ltd trimmed | 621,432 | $143M | 0.3% | 2026-Q2 |
| Woodline Partners LP trimmed | 596,462 | $137M | 0.3% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 579,093 | $133M | 0.3% | 2026-Q2 |
| Fenimore Asset Management Inc added | 577,158 | $132M | 0.3% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 570,955 | $131M | 0.3% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD added | 559,087 | $126M | 0.3% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 555,071 | $127M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 546,230 | $125M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 529,273 | $122M | 0.3% | 2026-Q2 |
| National Pension Service added | 516,323 | $119M | 0.2% | 2026-Q2 |
| Mawer Investment Management Ltd. trimmed | 510,025 | $117M | 0.2% | 2026-Q2 |
| Bank Julius Baer & Co. Ltd, Zurich trimmed | 502,345 | $115M | 0.2% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 501,471 | $115M | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 492,767 | $113M | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 489,350 | $112M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 471,875 | $108M | 0.2% | 2026-Q2 |
| Global Retirement Partners, LLC trimmed | 441,225 | $101M | 0.2% | 2026-Q2 |
| APG Asset Management N.V. trimmed | 425,155 | $85M | 0.2% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 424,430 | $96M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 420,980 | $97M | 0.2% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 416,536 | $96M | 0.2% | 2026-Q2 |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. new | 415,941 | $95M | 0.2% | 2026-Q2 |
| CHILTON INVESTMENT CO INC. trimmed | 413,100 | $95M | 0.2% | 2026-Q2 |
| MILFORD FUNDS LTD added | 407,718 | $94M | 0.2% | 2026-Q2 |
| NZS Capital, LLC added | 389,613 | $89M | 0.2% | 2026-Q2 |
| Bowie Capital Management, LLC trimmed | 378,174 | $87M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 375,360 | $86M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 372,212 | $85M | 0.2% | 2026-Q2 |
| Artisan Partners Limited Partnership trimmed | 362,658 | $83M | 0.2% | 2026-Q2 |
| REGIONS FINANCIAL CORP trimmed | 332,381 | $76M | 0.2% | 2026-Q2 |
| TD Asset Management Inc trimmed | 329,799 | $76M | 0.2% | 2026-Q2 |
| MAIRS & POWER INC added | 311,539 | $72M | 0.1% | 2026-Q2 |
| SEI INVESTMENTS CO added | 311,535 | $72M | 0.1% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 301,121 | $69M | 0.1% | 2026-Q2 |
| Welch & Forbes LLC trimmed | 289,883 | $67M | 0.1% | 2026-Q2 |
| ZACKS INVESTMENT MANAGEMENT trimmed | 288,036 | $66M | 0.1% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 283,417 | $65M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 276,963 | $64M | 0.1% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 267,170 | $61M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 264,344 | $57M | 0.1% | 2026-Q2 |
| Welch Group, LLC added | 262,241 | $60M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 261,632 | $60M | 0.1% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 261,297 | $60M | 0.1% | 2026-Q2 |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ added | 257,445 | $59M | 0.1% | 2026-Q2 |
| Central Securities Corp added | 255,000 | $59M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.