Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionFIL Ltd
Latest Disclosed Ownership1,209,624 shares
Latest Disclosed Value $ 261,980,366
FIL Ltd reports 7.53% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 15, 2026 - FIL Ltd filed a 13F-HR form disclosing ownership of 1,209,624 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $261,980,366 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,308,089 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -7.53% 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 1,209,624 -98,465 -7.53 261,980 -22.61 0.1131
2026-02-17 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,308,089 -58,291 -4.27 338,520 -20.01 0.2534
2025-11-13 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,366,380 155,940 12.88 423,223 9.22 0.3326
2025-08-14 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,210,440 -162,249 -11.82 387,486 -18.24 0.3309
2025-05-12 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,372,689 514,202 59.90 473,907 94.48 0.4503
2025-02-13 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 858,487 5,965 0.70 243,682 1.59 0.2277
2024-11-13 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 852,522 -226,413 -20.98 239,874 -14.26 0.2174
2024-08-13 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,078,935 -173,118 -13.83 279,779 -10.63 0.2766
2024-05-13 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,252,053 -90,988 -6.77 313,063 3.66 0.3104
2024-02-13 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,343,041 -517,680 -27.82 302,023 -28.79 0.3173
2023-11-13 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,860,721 -88,064 -4.52 424,114 -0.88 0.4995
2023-08-11 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,948,785 121,338 6.64 427,895 22.39 0.4808
2023-05-11 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,827,447 119,641 7.01 349,609 8.58 0.4010
2023-02-13 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,707,806 -38,451 -2.20 321,990 7.69 0.3864
2022-11-10 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,746,257 -85,000 -4.64 298,994 0.14 0.3845
2022-08-12 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,831,257 -141,403 -7.17 298,569 -13.31 0.3553
2022-05-13 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,972,660 34,512 1.78 344,428 4.74 0.3531
2022-02-14 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,938,148 58,114 3.09 328,845 17.67 0.3373
2021-11-15 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,880,034 -52,143 -2.70 279,467 3.25 0.3103
2021-08-13 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,932,177 341,760 21.49 270,659 36.40 0.2905
2021-05-14 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,590,417 -101,445 -6.00 198,437 -5.19 0.2259
2021-03-23 2020-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 1,691,862 100,999 6.35 209,300 24.61 0.2577
2021-02-08 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,691,862 100,999 209,300 101,228.5372
2020-11-13 2020-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,590,863 15,796 1.00 167,963 9.38 0.2083
2020-08-13 2020-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,575,067 481,433 44.02 153,553 72.26 0.2070
2020-05-14 2020-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,093,634 7,403 0.68 89,142 -13.82 0.1465
2020-02-07 2019-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,086,231 722,030 198.25 103,441 217.09 0.1434
2019-11-13 2019-09-30 13F GALLAGHER ARTHUR J COM 363576109 364,201 59,602 19.57 32,622 22.27 0.0493
2019-08-13 2019-06-30 13F GALLAGHER ARTHUR J COM 363576109 304,599 72,187 31.06 26,680 46.99 0.0402
2019-05-13 2019-03-31 13F GALLAGHER ARTHUR J COM 363576109 232,412 -318,650 -57.82 18,151 -55.31 0.0284
2019-02-13 2018-12-31 13F GALLAGHER ARTHUR J COM 363576109 551,062 -11,567 -2.06 40,614 -3.03 0.0721
2018-11-09 2018-09-30 13F GALLAGHER ARTHUR J COM 363576109 562,629 85,124 17.83 41,882 34.36 0.0619
2018-08-10 2018-06-30 13F GALLAGHER ARTHUR J COM 363576109 477,505 153,419 47.34 31,172 39.95 0.0470
2018-05-14 2018-03-31 13F GALLAGHER ARTHUR J COM 363576109 324,086 -35 -0.01 22,274 8.60 0.0612
2018-02-12 2017-12-31 13F GALLAGHER ARTHUR J COM 363576109 324,121 35 0.01 20,510 2.82 0.0571
2017-11-13 2017-09-30 13F GALLAGHER ARTHUR J COM 363576109 324,086 41,717 14.77 19,948 23.39 0.0572
2017-08-29 2017-06-30 13F/A-1 GALLAGHER ARTHUR J COM 363576109 282,369 -29,171 -9.36 16,166 -8.23 0.0466
2017-08-11 2017-06-30 13F GALLAGHER ARTHUR J COM 363576109 282,369 -29,171 16,166
2017-05-11 2017-03-31 13F GALLAGHER ARTHUR J COM 363576109 311,540 146,798 89.11 17,615 105.78 0.0496
2017-02-10 2016-12-31 13F GALLAGHER ARTHUR J COM 363576109 164,742 164,742 8,560 0.0251
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.