Latest Period
Q4 2025
Security Snapshot
Arthur J. Gallagher & Co. - Common Stock (AJG) Institutional Ownership
CUSIP: 363576109
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
1,283
Shares (Excl. Options)
233,932,980
Price
$258.79
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- Type / Class
- Equity / Common Stock
- Symbol
- AJG on NYSE
- Shares outstanding
- 256,927,236
- Price per share
- $222.50
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 233,932,980
- Total reported value
- $60,495,539,840
- % of total 13F portfolios
- 0.03%
- Share change
- +8,153,655
- Value change
- +$2,066,160,381
- Number of holders
- 1,283
- Price from insider filings
- $222.50
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- AJG - Arthur J. Gallagher & Co. - Common Stock is tracked under CUSIP 363576109.
- 1283 institutions reported positions in Q4 2025.
- 4 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 1,283 to 464 between Q4 2025 and Q1 2026.
- Reported value moved from $60,495,539,840 to $2,287,320,334.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 1283 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 363576109?
CUSIP 363576109 identifies AJG - Arthur J. Gallagher & Co. - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 363576109:
Significant Owners of Arthur J. Gallagher & Co. - Common Stock (AJG) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| JPMORGAN CHASE & CO | 7.8% | +16% | $6,242,814,966 | +$932,130,007 | 20,155,017 | +18% | JPMORGAN CHASE & CO. | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 7.5% | $4,167,833,033 | 19,243,850 | Vanguard Capital Management | 31 Mar 2026 | |||
| BlackRock, Inc. | 6.9% | $5,674,337,959 | 17,725,659 | BlackRock, Inc. | 30 Jun 2025 | |||
| Capital World Investors | 5% | $3,351,793,734 | 12,951,790 | Capital World Investors | 31 Dec 2025 |
As of 31 Dec 2025, 1,283 institutional investors reported holding 233,932,980 shares of Arthur J. Gallagher & Co. - Common Stock (AJG). This represents 91% of the company’s total 256,927,236 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Arthur J. Gallagher & Co. - Common Stock (AJG) together control 67% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 12% | 31,390,446 | +0.7% | 0.12% | $8,123,533,521 |
| JPMORGAN CHASE & CO | 7.9% | 20,313,249 | -0.12% | 0.35% | $5,256,866,617 |
| BlackRock, Inc. | 7.5% | 19,239,621 | +3.6% | 0.08% | $4,979,021,550 |
| FMR LLC | 5.9% | 15,110,682 | +21% | 0.2% | $3,910,493,366 |
| Capital World Investors | 4.9% | 12,613,371 | +7% | 0.44% | $3,264,358,666 |
| STATE STREET CORP | 4.3% | 10,953,598 | +0.57% | 0.1% | $2,834,681,626 |
| MORGAN STANLEY | 3% | 7,773,808 | -9.5% | 0.12% | $2,011,784,635 |
| NORGES BANK | 2.9% | 7,438,704 | 0.21% | $1,925,062,208 | |
| Capital International Investors | 2.4% | 6,280,455 | -13% | 0.25% | $1,625,558,730 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.3% | 6,014,196 | +0.2% | 0.1% | $1,553,237,593 |
| T. Rowe Price Investment Management, Inc. | 2.3% | 5,887,538 | +124% | 0.96% | $1,523,636,000 |
| Mitsubishi UFJ Asset Management Co., Ltd. | 1.2% | 3,056,069 | -1.7% | 0.53% | $782,353,664 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.2% | 2,965,983 | -9.3% | 0.13% | $767,566,741 |
| PRINCIPAL FINANCIAL GROUP INC | 1.1% | 2,832,943 | -1.2% | 0.37% | $733,151,314 |
| WCM INVESTMENT MANAGEMENT, LLC | 0.93% | 2,380,294 | -2.1% | 1.3% | $623,232,443 |
| NORTHERN TRUST CORP | 0.87% | 2,230,272 | -3.8% | 0.07% | $577,172,090 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.8% | 2,043,640 | +0.72% | 0.08% | $528,875,837 |
| BROWN ADVISORY INC | 0.79% | 2,027,929 | -19% | 0.73% | $524,813,875 |
| JANUS HENDERSON GROUP PLC | 0.73% | 1,869,559 | +15% | 0.22% | $483,868,236 |
| Invesco Ltd. | 0.67% | 1,733,169 | +5.2% | 0.07% | $448,526,860 |
| GOLDMAN SACHS GROUP INC | 0.67% | 1,711,544 | +22% | 0.06% | $442,930,435 |
| Capital Research Global Investors | 0.6% | 1,548,473 | +0.51% | 0.07% | $400,729,328 |
| BANK OF AMERICA CORP /DE/ | 0.59% | 1,508,079 | -3.7% | 0.03% | $390,275,830 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.56% | 1,446,769 | -5.1% | 0.08% | $374,409,349 |
| Legal & General Group Plc | 0.53% | 1,369,877 | -1.1% | 0.08% | $354,510,472 |
Institutional Holders of Arthur J. Gallagher & Co. - Common Stock (AJG) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 10,560,129 | $2,287,320,334 | +$63,757,856 | $216.58 | 464 |
| 2025 Q4 | 233,932,980 | $60,495,539,840 | +$2,066,160,381 | $258.79 | 1,283 |
| 2025 Q3 | 224,973,489 | $69,601,142,490 | -$1,040,580,353 | $309.74 | 1,328 |
| 2025 Q2 | 227,791,728 | $72,839,908,420 | +$1,101,453,811 | $320.12 | 1,360 |
| 2025 Q1 | 224,021,472 | $77,272,419,154 | -$1,774,697,720 | $345.24 | 1,341 |
| 2024 Q4 | 232,457,193 | $65,987,297,671 | +$12,131,406,733 | $283.85 | 1,309 |
| 2024 Q3 | 187,173,127 | $52,679,414,541 | -$530,726,999 | $281.37 | 1,190 |
| 2024 Q2 | 189,018,822 | $49,023,449,437 | +$906,162,686 | $259.31 | 1,142 |
| 2024 Q1 | 185,687,022 | $46,399,473,179 | +$33,618,211 | $250.04 | 1,119 |
| 2023 Q4 | 185,452,704 | $41,694,286,696 | -$110,939,205 | $224.88 | 1,077 |
| 2023 Q3 | 185,257,677 | $42,216,774,694 | +$536,912,503 | $227.93 | 991 |
| 2023 Q2 | 181,971,146 | $39,901,956,907 | +$247,732,208 | $219.57 | 967 |
| 2023 Q1 | 181,063,439 | $34,634,801,609 | +$63,909,468 | $191.31 | 935 |
| 2022 Q4 | 181,615,768 | $34,239,959,080 | +$19,660,891 | $188.54 | 909 |
| 2022 Q3 | 182,532,989 | $31,269,696,433 | +$511,820,151 | $171.22 | 849 |
| 2022 Q2 | 178,431,447 | $29,086,247,637 | +$228,103,920 | $163.04 | 811 |
| 2022 Q1 | 177,797,814 | $31,016,015,563 | +$81,171,001 | $174.60 | 804 |
| 2021 Q4 | 177,263,332 | $30,044,423,551 | +$16,714,205 | $169.67 | 842 |
| 2021 Q3 | 177,056,860 | $26,315,528,149 | +$190,241,113 | $148.65 | 756 |
| 2021 Q2 | 175,727,054 | $24,590,770,903 | +$1,450,848,130 | $140.08 | 766 |
| 2021 Q1 | 165,350,403 | $20,613,688,189 | +$229,737,382 | $124.77 | 719 |
| 2020 Q4 | 163,592,286 | $20,212,488,290 | +$476,727,934 | $123.71 | 712 |
| 2020 Q3 | 159,865,142 | $16,868,703,845 | +$63,972,121 | $105.58 | 683 |
| 2020 Q2 | 158,648,856 | $15,461,216,958 | +$235,091,999 | $97.49 | 653 |
| 2020 Q1 | 156,606,570 | $12,766,947,526 | -$64,398,603 | $81.51 | 639 |
| 2019 Q4 | 156,570,249 | $14,908,480,267 | -$240,509,341 | $95.23 | 669 |
| 2019 Q3 | 156,244,435 | $13,992,863,953 | +$216,173,025 | $89.57 | 634 |
| 2019 Q2 | 153,691,705 | $13,448,728,772 | +$363,520,875 | $87.59 | 637 |
| 2019 Q1 | 151,817,853 | $11,856,269,394 | -$126,691,061 | $78.10 | 661 |
| 2018 Q4 | 153,105,966 | $11,279,160,057 | +$160,774,381 | $73.70 | 591 |
| 2018 Q3 | 150,933,197 | $11,234,420,168 | -$29,858,275 | $74.44 | 586 |
| 2018 Q2 | 151,483,943 | $9,890,670,236 | +$301,558,470 | $65.28 | 573 |
| 2018 Q1 | 150,485,128 | $10,342,654,082 | -$175,059,697 | $68.73 | 591 |
| 2017 Q4 | 153,298,768 | $9,698,668,246 | +$157,530,353 | $63.28 | 575 |
| 2017 Q3 | 150,434,176 | $9,259,202,722 | +$161,660,538 | $61.55 | 507 |
| 2017 Q2 | 147,721,453 | $8,457,237,241 | +$66,235,972 | $57.25 | 509 |
| 2017 Q1 | 148,710,348 | $8,408,414,205 | +$950,585,521 | $56.54 | 487 |
| 2016 Q4 | 146,154,779 | $7,594,742,641 | -$38,202,167 | $51.96 | 484 |
| 2016 Q3 | 146,610,626 | $7,446,765,144 | +$119,077,486 | $50.87 | 462 |
| 2016 Q2 | 145,343,838 | $6,919,373,947 | +$19,351,965 | $47.60 | 473 |
| 2016 Q1 | 144,376,376 | $6,420,234,162 | +$47,309,478 | $44.48 | 424 |
| 2015 Q4 | 143,378,128 | $5,868,074,359 | +$39,501,699 | $40.94 | 429 |
| 2015 Q3 | 142,588,269 | $5,887,330,556 | +$51,855,119 | $41.28 | 401 |
| 2015 Q2 | 141,937,401 | $6,713,371,887 | +$362,161,376 | $47.30 | 400 |
| 2015 Q1 | 134,272,592 | $6,276,820,949 | +$88,149,477 | $46.75 | 372 |
| 2014 Q4 | 132,893,456 | $6,256,296,803 | +$175,126,244 | $47.08 | 368 |
| 2014 Q3 | 129,088,516 | $5,855,173,161 | +$144,685,002 | $45.36 | 360 |
| 2014 Q2 | 126,272,112 | $5,884,108,382 | +$1,005,930,480 | $46.60 | 362 |
| 2014 Q1 | 104,285,926 | $4,959,433,884 | +$86,608,305 | $47.58 | 333 |