ARTHUR J GALLAGHER & CO (AJG) Institutional Shareholders
ARTHUR J GALLAGHER & CO (AJG) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $53.21B in AJG holdings during the latest filing period.
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 $4.98B, representing an estimated gain of +9.43% 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
1,264
Total Reported Value
$53.21B
Largest Holder
Blackrock, Inc.
Largest Position
$4.55B
Insider Transactions (90d)
9
Latest Filing Quarter
Q2 2026
New Institutional Positions
44
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 | $4,979,703,173 | +$428,966,698 | +9.43% | |
| Fmr Llc | 0.19% | 18,645,620 | $4,280,475,069 | $4,683,966,200 | +$403,491,131 | +9.43% | |
| Vanguard Capital Management Llc | 0.08% | 16,777,183 | $3,851,537,901 | $4,214,596,141 | +$363,058,240 | +9.43% | |
| Jpmorgan Chase & Co | 0.19% | 14,356,764 | $3,260,708,906 | $3,606,562,684 | +$345,853,778 | +10.61% | |
| Capital World Investors | 0.34% | 12,511,991 | $2,872,235,049 | $3,143,137,259 | +$270,902,210 | +9.43% | |
| Vanguard Portfolio Management Llc | 0.13% | 12,454,725 | $2,859,231,218 | $3,128,751,467 | +$269,520,249 | +9.43% | |
| State Street Corp | 0.08% | 11,303,790 | $2,595,011,070 | $2,839,625,086 | +$244,614,016 | +9.43% | |
| Dodge & Cox Stock Fund | V. D. Dodge, E. M. Cox | 1.13% | 9,363,634 | $2,149,609,457 | $2,352,238,497 | +$202,629,040 | +9.43% |
| Norges Bank | 0.15% | 6,733,790 | $1,545,876,170 | $1,691,595,386 | +$145,719,216 | +9.43% | |
| Geode Capital Management, Llc | 0.08% | 6,298,870 | $1,446,658,088 | $1,582,339,133 | +$135,681,045 | +9.38% | |
| Eagle Capital Management | Ravenel Boykin Curry IV | 3.43% | 4,890,612 | $1,122,737,692 | $1,228,570,641 | +$105,832,949 | +9.43% |
| Principal Financial Group Inc | 0.39% | 3,494,796 | $802,311,830 | $877,927,703 | +$75,615,873 | +9.42% | |
| Goldman Sachs Group Inc | 0.07% | 2,818,022 | $646,933,249 | $707,915,307 | +$60,982,058 | +9.43% | |
| Morgan Stanley | 0.03% | 2,591,858 | $595,013,335 | $651,100,648 | +$56,087,313 | +9.43% | |
| Capital Research Global Investors | 0.08% | 2,585,853 | $593,625,531 | $649,592,132 | +$55,966,601 | +9.43% | |
| Wcm Investment Management, Llc | 1.00% | 2,425,562 | $550,893,700 | $609,325,430 | +$58,431,730 | +10.61% | |
| Gtcr Llc | 13.95% | 2,373,773 | $544,947,068 | $596,315,515 | +$51,368,447 | +9.43% | |
| Northern Trust Corp | 0.06% | 2,204,733 | $506,140,556 | $553,850,977 | +$47,710,421 | +9.43% | |
| Charles Schwab Investment Management Inc | 0.07% | 2,156,506 | $495,071,015 | $541,735,872 | +$46,664,857 | +9.43% | |
| Sixth Street Partners Management Company, L.P. | 0.07% | 2,156,506 | $495,071,015 | $541,735,872 | +$46,664,857 | +9.43% | |
| Capital International Investors | 0.10% | 2,002,580 | $459,536,264 | $503,068,122 | +$43,531,858 | +9.47% | |
| Manufacturers Life Insurance Company, The | 0.34% | 1,917,615 | $440,226,807 | $481,724,064 | +$41,497,257 | +9.43% | |
| Janus Henderson Group Plc | 0.21% | 1,970,990 | $426,886,844 | $495,132,398 | +$68,245,554 | +15.99% | |
| Invesco Ltd. | 0.03% | 1,750,848 | $401,942,208 | $439,830,526 | +$37,888,318 | +9.43% | |
| Bank Of America Corp | 0.02% | 1,540,997 | $353,766,791 | $387,113,856 | +$33,347,065 | +9.43% | |
| Vanguard Fiduciary Trust Co | 0.07% | 1,442,494 | $331,153,348 | $362,368,918 | +$31,215,570 | +9.43% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 1,449,869 | $314,012,628 | $364,221,591 | +$50,208,963 | +15.99% | |
| First Pacific Advisors, Lp | 3.79% | 1,336,290 | $306,772,095 | $335,689,411 | +$28,917,316 | +9.43% | |
| Legal & General Group Plc | 0.06% | 1,306,295 | $299,886,147 | $328,154,367 | +$28,268,220 | +9.43% | |
| Brave Warrior Advisors | Glenn Greenberg | 6.43% | 1,285,022 | $295,002,501 | $322,810,377 | +$27,807,876 | +9.43% |
| Wellington Management Group Llp | 0.05% | 1,281,475 | $294,188,216 | $321,919,335 | +$27,731,119 | +9.43% | |
| Bank Of New York Mellon Corp | 0.05% | 1,260,984 | $289,484,067 | $316,771,791 | +$27,287,724 | +9.43% | |
| Brown Advisory Inc | 0.44% | 1,229,898 | $282,351,582 | $308,962,677 | +$26,611,095 | +9.42% | |
| Fil Ltd | 0.19% | 1,125,965 | $258,487,784 | $282,853,668 | +$24,365,884 | +9.43% | |
| Ubs Group Ag | 0.04% | 1,064,498 | $244,376,806 | $267,412,543 | +$23,035,737 | +9.43% | |
| Beck Mack & Oliver Llc | 4.75% | 1,061,905 | $243,781,531 | $266,761,155 | +$22,979,624 | +9.43% | |
| Brown Brothers Harriman & Co | 1.01% | 1,000,945 | $229,786,848 | $251,447,393 | +$21,660,545 | +9.43% | |
| Guinness Asset Management Ltd | 3.30% | 851,348 | $194,729,830 | $213,867,131 | +$19,137,301 | +9.83% | |
| Envestnet Asset Management Inc | 0.05% | 833,230 | $191,284,684 | $209,315,708 | +$18,031,024 | +9.43% | |
| Dimensional Fund Advisors Lp | 0.03% | 826,025 | $189,612,922 | $207,505,740 | +$17,892,818 | +9.44% | |
| Brandes Investment Partners, Lp | 1.31% | 813,014 | $186,646,545 | $204,237,247 | +$17,590,702 | +9.42% | |
| Amundi | 0.04% | 799,475 | $183,535,476 | $200,836,115 | +$17,300,639 | +9.43% | |
| Adage Capital Partners Gp, L.L.C. | 0.26% | 799,003 | $183,427,119 | $200,717,544 | +$17,290,425 | +9.43% | |
| Focus Partners Wealth | 0.18% | 771,225 | $177,050,457 | $193,739,432 | +$16,688,975 | +9.43% | |
| Cooke & Bieler Lp | 2.04% | 769,623 | $176,682,352 | $193,336,994 | +$16,654,642 | +9.43% | |
| Cibc Bancorp Usa Inc. | 0.22% | 761,528 | $174,939,542 | $191,303,449 | +$16,363,907 | +9.35% | |
| Nuveen, Llc | 0.04% | 725,837 | $166,630,347 | $182,337,513 | +$15,707,166 | +9.43% | |
| Swiss National Bank | 0.09% | 725,060 | $166,452,024 | $182,142,323 | +$15,690,299 | +9.43% | |
| Arrowstreet Capital, Limited Partnership | 0.07% | 716,424 | $164,469,458 | $179,972,873 | +$15,503,415 | +9.43% | |
| Deutsche Bank Ag\ | 0.05% | 693,775 | $159,269,926 | $174,283,218 | +$15,013,292 | +9.43% |
Frequently asked questions about AJG
Who owns the most AJG stock?
The largest holders of AJG are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ARTHUR J GALLAGHER & CO (AJG).
Is AJG widely held by superinvestors?
Many widely followed stocks like AJG appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AJG is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.