AJG Institutional Ownership & Shareholders
ARTHUR J GALLAGHER & CO (AJG) is currently held by 1,279 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $53.52B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AJG tracked by InsiderSet, reporting ownership valued at approximately $4.55B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $5.53B, representing an estimated gain of +21.48% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% of the total disclosed AJG value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in ARTHUR J GALLAGHER & CO (AJG).
This page ranks the largest institutional AJG shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,279
Total Reported Value
$53.52B
Largest Holder
Blackrock, Inc.
Largest Position
$4.55B
Insider Transactions (90d)
10
Latest Filing Quarter
Q2 2026
New Institutional Positions
32
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.07% | 19,822,870 | $4,550,736,475 | $5,528,400,214 | +$977,663,739 | +21.48% | |
| Fmr Llc | 0.19% | 18,645,620 | $4,280,475,069 | $5,200,076,962 | +$919,601,893 | +21.48% | |
| Vanguard Capital Management Llc | 0.08% | 16,777,183 | $3,851,537,901 | $4,678,988,567 | +$827,450,666 | +21.48% | |
| Jpmorgan Chase & Co | 0.19% | 14,356,764 | $3,260,708,906 | $4,003,957,912 | +$743,249,006 | +22.79% | |
| Capital World Investors | 0.34% | 12,511,991 | $2,872,235,049 | $3,489,469,170 | +$617,234,121 | +21.49% | |
| Vanguard Portfolio Management Llc | 0.13% | 12,454,725 | $2,859,231,218 | $3,473,498,255 | +$614,267,037 | +21.48% | |
| State Street Corp | 0.08% | 11,303,790 | $2,595,011,070 | $3,152,513,993 | +$557,502,923 | +21.48% | |
| Dodge & Cox Stock Fund | V. D. Dodge, E. M. Cox | 1.13% | 9,363,634 | $2,149,609,457 | $2,611,423,886 | +$461,814,429 | +21.48% |
| Norges Bank | 0.15% | 6,733,790 | $1,545,876,170 | $1,877,986,693 | +$332,110,523 | +21.48% | |
| Geode Capital Management, Llc | 0.08% | 6,298,870 | $1,446,658,088 | $1,756,691,854 | +$310,033,766 | +21.43% | |
| Eagle Capital Management | Ravenel Boykin Curry IV | 3.43% | 4,890,612 | $1,122,737,692 | $1,363,942,781 | +$241,205,089 | +21.48% |
| Principal Financial Group Inc | 0.41% | 3,469,361 | $791,402,859 | $967,570,089 | +$176,167,230 | +22.26% | |
| Goldman Sachs Group Inc | 0.07% | 2,818,022 | $646,933,249 | $785,918,156 | +$138,984,907 | +21.48% | |
| Morgan Stanley | 0.03% | 2,591,858 | $595,013,335 | $722,843,278 | +$127,829,943 | +21.48% | |
| Capital Research Global Investors | 0.08% | 2,585,853 | $593,625,531 | $721,168,543 | +$127,543,012 | +21.49% | |
| Wcm Investment Management, Llc | 1.00% | 2,425,562 | $550,893,700 | $676,464,986 | +$125,571,286 | +22.79% | |
| Gtcr Llc | 13.95% | 2,373,773 | $544,947,068 | $662,021,552 | +$117,074,484 | +21.48% | |
| Northern Trust Corp | 0.06% | 2,204,733 | $506,140,556 | $614,877,986 | +$108,737,430 | +21.48% | |
| Charles Schwab Investment Management Inc | 0.07% | 2,156,506 | $495,071,015 | $601,427,958 | +$106,356,943 | +21.48% | |
| Capital International Investors | 0.10% | 2,002,580 | $459,536,264 | $558,499,536 | +$98,963,272 | +21.54% | |
| Manufacturers Life Insurance Company, The | 0.34% | 1,917,615 | $440,226,807 | $534,803,647 | +$94,576,840 | +21.48% | |
| Janus Henderson Group Plc | 0.21% | 1,970,990 | $426,886,844 | $549,689,401 | +$122,802,557 | +28.77% | |
| Invesco Ltd. | 0.03% | 1,750,848 | $401,942,208 | $488,293,999 | +$86,351,791 | +21.48% | |
| Bank Of America Corp | 0.02% | 1,540,997 | $353,766,791 | $429,768,653 | +$76,001,862 | +21.48% | |
| Vanguard Fiduciary Trust Co | 0.07% | 1,442,494 | $331,153,348 | $402,297,152 | +$71,143,804 | +21.48% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 1,449,869 | $314,012,628 | $404,353,965 | +$90,341,337 | +28.77% | |
| First Pacific Advisors, Lp | 3.79% | 1,336,290 | $306,772,095 | $372,677,918 | +$65,905,823 | +21.48% | |
| Legal & General Group Plc | 0.06% | 1,306,295 | $299,886,147 | $364,312,613 | +$64,426,466 | +21.48% | |
| Brave Warrior Advisors | Glenn Greenberg | 6.43% | 1,285,022 | $295,002,501 | $358,379,786 | +$63,377,285 | +21.48% |
| Wellington Management Group Llp | 0.05% | 1,281,475 | $294,188,216 | $357,390,563 | +$63,202,347 | +21.48% | |
| Bank Of New York Mellon Corp | 0.05% | 1,260,984 | $289,484,067 | $351,675,828 | +$62,191,761 | +21.48% | |
| Brown Advisory Inc | 0.44% | 1,229,898 | $282,351,582 | $343,006,253 | +$60,654,671 | +21.48% | |
| Fil Ltd | 0.19% | 1,125,965 | $258,487,784 | $314,020,379 | +$55,532,595 | +21.48% | |
| T. Rowe Price Investment Management, Inc. | 0.17% | 1,117,177 | $256,471,000 | $311,569,494 | +$55,098,494 | +21.48% | |
| Ubs Group Ag | 0.04% | 1,064,498 | $244,376,806 | $296,877,847 | +$52,501,041 | +21.48% | |
| Beck Mack & Oliver Llc | 4.75% | 1,061,905 | $243,781,531 | $296,154,685 | +$52,373,154 | +21.48% | |
| Brown Brothers Harriman & Co | 1.01% | 1,000,945 | $229,786,848 | $279,153,551 | +$49,366,703 | +21.48% | |
| Guinness Asset Management Ltd | 3.30% | 851,348 | $194,729,830 | $237,432,444 | +$42,702,614 | +21.93% | |
| Envestnet Asset Management Inc | 0.05% | 833,230 | $191,284,684 | $232,379,515 | +$41,094,831 | +21.48% | |
| Dimensional Fund Advisors Lp | 0.03% | 826,025 | $189,612,922 | $230,370,112 | +$40,757,190 | +21.49% | |
| Brandes Investment Partners, Lp | 1.31% | 813,014 | $186,646,545 | $226,741,474 | +$40,094,929 | +21.48% | |
| Adage Capital Partners Gp, L.L.C. | 0.26% | 799,003 | $183,427,119 | $222,833,947 | +$39,406,828 | +21.48% | |
| Focus Partners Wealth | 0.18% | 771,225 | $177,050,457 | $215,086,940 | +$38,036,483 | +21.48% | |
| Cibc Bancorp Usa Inc. | 0.22% | 761,528 | $174,939,542 | $212,382,544 | +$37,443,002 | +21.40% | |
| Nuveen, Llc | 0.04% | 725,837 | $166,630,347 | $202,428,681 | +$35,798,334 | +21.48% | |
| Swiss National Bank | 0.09% | 725,060 | $166,452,024 | $202,211,983 | +$35,759,959 | +21.48% | |
| Arrowstreet Capital, Limited Partnership | 0.07% | 716,424 | $164,469,458 | $199,803,489 | +$35,334,031 | +21.48% | |
| Deutsche Bank Ag\ | 0.05% | 693,775 | $159,269,926 | $193,486,910 | +$34,216,984 | +21.48% | |
| Bls Capital Fondsmaeglerselskab A/S | 5.84% | 659,908 | $151,495,080 | $184,041,742 | +$32,546,662 | +21.48% | |
| Unisphere Establishment | 1.25% | 639,700 | $146,855,929 | $178,405,933 | +$31,550,004 | +21.48% |
Frequently asked questions about AJG
Who are the largest institutional holders of AJG?
The largest institutional holders of AJG reported in the latest SEC Form 13F filings include Blackrock, Inc., Fmr Llc, Vanguard Capital Management Llc, Jpmorgan Chase & Co, and Capital World Investors. InsiderSet ranks institutional holders by their latest reported AJG position.
What is AJG institutional ownership?
This page tracks AJG positions reported by institutional investment managers through SEC Form 13F. ARTHUR J GALLAGHER & CO (AJG) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own AJG?
InsiderSet currently tracks 1,279 institutional managers reporting AJG holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of AJG shareholders.
How much AJG stock do institutions own?
Institutional investment managers disclosed approximately $53.52B in AJG holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was AJG institutional ownership last updated?
The latest AJG institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional AJG holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its AJG position after the reporting date.
Are institutions buying or selling AJG?
Institutional buying and selling can be analyzed by comparing AJG positions across consecutive 13F reporting periods. InsiderSet's AJG Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View AJG ownership changes.
How has AJG institutional ownership changed over time?
InsiderSet tracks AJG institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.