Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionVictory Capital Management Inc
Latest Disclosed Ownership87,133 shares
Latest Disclosed Value $ 18,871,265
Victory Capital Management Inc reports 1.93% increase in ownership of AJG / Arthur J. Gallagher & Co.

On May 15, 2026 - Victory Capital Management Inc filed a 13F-HR form disclosing ownership of 87,133 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $18,871,265 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 85,481 shares of Arthur J. Gallagher & Co.. This represents a change in shares of 1.93% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F GALLAGHER ARTHUR J COM 363576109 87,133 1,652 1.93 18,871 -14.69 0.0091
2026-02-13 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 85,481 1,086 1.29 22,122 -15.37 0.0125
2025-11-12 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 84,395 -206 -0.24 26,141 -3.48 0.0153
2025-08-13 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 84,601 -23,211 -21.53 27,082 -27.24 0.0175
2025-05-02 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 107,812 821 0.77 37,221 22.56 0.0381
2025-02-06 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 106,991 6,239 6.19 30,369 7.13 0.0299
2024-11-05 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 100,752 -1,769 -1.73 28,349 6.64 0.0273
2024-08-05 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 102,521 -3,721 -3.50 26,585 0.08 0.0267
2024-05-03 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 106,242 -2,791 -2.56 26,565 8.34 0.0259
2024-02-05 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 109,033 -4,021 -3.56 24,519 -4.85 0.0258
2023-11-06 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 113,054 5,439 5.05 25,768 9.05 0.0296
2023-07-27 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 107,615 -11,245 -9.46 23,629 3.91 0.0260
2023-05-02 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 118,860 -2,609 -2.15 22,739 -0.71 0.0255
2023-04-25 2022-12-31 13F/A-3 GALLAGHER ARTHUR J COM 363576109 121,469 48 0.04 22,902 10.15 0.0264
2023-03-10 2022-12-31 13F/A-2 GALLAGHER ARTHUR J COM 363576109 121,469 48 22,902 0.0250
2023-02-10 2022-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 121,469 48 22,902 0.0158
2023-02-09 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 112,179 -9,242 21,766 0.0148
2022-11-02 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 121,421 -15,365 -11.23 20,790 -6.78 0.0243
2022-08-01 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 136,786 1,873 1.39 22,302 -2.78 0.0254
2022-05-04 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 134,913 1,580 1.19 22,940 1.41 0.0229
2022-02-07 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 133,333 -17,306 -11.49 22,622 1.03 0.0208
2021-11-02 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 150,639 -1,582,510 -91.31 22,392 -90.78 0.0219
2021-08-03 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,733,149 -610,909 -26.06 242,780 -16.99 0.2331
2021-05-04 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,344,058 412,516 21.36 292,467 22.40 0.2997
2021-02-01 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,931,542 12,594 0.66 238,951 17.94 0.2662
2020-11-09 2020-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,918,948 -69,316 -3.49 202,602 4.52 0.2601
2020-08-07 2020-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,988,264 432,349 27.79 193,836 52.84 0.2625
2020-05-12 2020-03-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 1,555,915 -13,898 -0.89 126,822 -15.17 0.2126
2020-05-04 2020-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,555,915 -13,898 126,822 138,793.7917
2020-02-06 2019-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 1,569,813 -26,465 -1.66 149,493 4.56 0.1815
2020-02-04 2019-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,560,729 -35,549 160,084 191,891.1934
2019-11-12 2019-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,596,278 -354,193 -18.16 142,979 -16.31 0.1840
2019-08-15 2019-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,950,471 -347,847 -15.13 170,842 -4.82 0.3446
2019-05-03 2019-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,298,318 -494,546 -17.71 179,498 -12.79 0.4084
2019-05-02 2018-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 2,792,864 -440,070 -13.61 205,834 -14.47 0.5167
2019-02-05 2018-12-31 13F GALLAGHER ARTHUR J COM 363576109 2,792,864 -440,070 205,834
2018-11-01 2018-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,232,934 -216,387 -6.27 240,661 6.88 0.4966
2018-08-02 2018-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,449,321 5,926 0.17 225,172 -4.86 0.4791
2018-05-04 2018-03-31 13F GALLAGHER ARTHUR J COM 363576109 3,443,395 -739,059 -17.67 236,663 -10.58 0.5162
2018-02-01 2017-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,182,454 297,388 7.65 264,665 10.68 0.5570
2017-10-27 2017-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,885,066 286,471 7.96 239,126 16.07 0.5373
2017-08-07 2017-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,598,595 325,405 9.94 206,020 11.32 0.4823
2017-05-10 2017-03-31 13F GALLAGHER ARTHUR J COM 363576109 3,273,190 2,114,276 182.44 185,065 207.33 0.4406
2017-02-09 2016-12-31 13F Arthur J Gallagher COM 363576109 1,158,914 816,580 238.53 60,217 245.80 0.1519
2016-11-02 2016-09-30 13F Arthur J Gallagher COM 363576109 342,334 -23,797 -6.50 17,414 -0.08 0.0488
2016-08-09 2016-06-30 13F Arthur J Gallagher COM 363576109 366,131 298,018 437.53 17,428 475.18 0.0697
2016-05-17 2016-03-31 13F/A-2 GALLAGHER ARTHUR J AND COM 363576109 68,113 -6,083 -8.20 3,030 -0.26 0.0125
2016-05-12 2016-03-31 13F/A-1 GALLAGHER ARTHUR J AND COM 363576109 68,113 0 3,030 0.0124
2016-05-12 2016-03-31 13F GALLAGHER ARTHUR J AND COM 363576109 68,113 3,030
2016-02-10 2015-12-31 13F GALLAGHER ARTHUR J AND COM 363576109 74,196 12,278 19.83 3,038 18.86 0.0126
2015-11-06 2015-09-30 13F GALLAGHER ARTHUR J COM 363576109 61,918 6,419 11.57 2,556 -3.03 0.0105
2015-08-14 2015-06-30 13F/A-01 Arthur J Gallagher COM 363576109 55,499 55,499 2,636 0.0098
2015-08-07 2015-06-30 13F Arthur J Gallagher COM 363576109 55,499 2,636
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.