Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionBollard Group LLC
Latest Disclosed Ownership11,832 shares
Latest Disclosed Value $ 2,563
Bollard Group LLC reports 0.28% increase in ownership of AJG / Arthur J. Gallagher & Co.

On May 14, 2026 - Bollard Group LLC filed a 13F-HR form disclosing ownership of 11,832 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $2,563 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,799 shares of Arthur J. Gallagher & Co.. This represents a change in shares of 0.28% 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)
2026-05-14 2026-03-31 13F GALLAGHER ARTHUR J COM 363576109 11,832 33 0.28 3 -33.33 0.0755
2026-02-13 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 11,799 -339 -2.79 3 0.00 0.0763
2025-11-14 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 12,138 22 0.18 4 0.00 0.0884
2025-08-13 2025-06-30 13F Gallagher Arthur J COM 363576109 12,116 564 4.88 4 0.00 0.0887
2025-05-15 2025-03-31 13F Gallagher Arthur J COM 363576109 11,552 19 0.16 4 0.00 0.1047
2025-02-14 2024-12-31 13F Gallagher Arthur J COM 363576109 11,533 -14,175 -55.14 3 -57.14 0.0907
2024-11-13 2024-09-30 13F Gallagher Arthur J COM 363576109 25,708 50 0.19 7 16.67 0.1925
2024-08-14 2024-06-30 13F Gallagher Arthur J COM 363576109 25,658 54 0.21 7 0.00 0.1877
2024-05-13 2024-03-31 13F Gallagher Arthur J COM 363576109 25,604 56 0.22 6 20.00 0.1936
2024-02-13 2023-12-31 13F Gallagher Arthur J COM 363576109 25,548 52 0.20 6 0.00 0.1998
2023-11-14 2023-09-30 13F Gallagher Arthur J COM 363576109 25,496 -3,521 -12.13 6 -16.67 0.2139
2023-08-14 2023-06-30 13F Gallagher Arthur J COM 363576109 29,017 70 0.24 6 20.00 0.2167
2023-05-12 2023-03-31 13F Gallagher Arthur J COM 363576109 28,947 84 0.29 6 0.00 0.2001
2023-02-10 2022-12-31 13F Gallagher Arthur J COM 363576109 28,863 -852 -2.87 5 -99.90 0.2079
2022-11-09 2022-09-30 13F Gallagher Arthur J COM 363576109 29,715 75 0.25 5,088 5.30 0.2138
2022-08-12 2022-06-30 13F Gallagher Arthur J COM 363576109 29,640 92 0.31 4,832 -6.34 0.1958
2022-05-12 2022-03-31 13F Gallagher Arthur J COM 363576109 29,548 187 0.64 5,159 3.55 0.1650
2022-02-11 2021-12-31 13F Gallagher Arthur J COM 363576109 29,361 78 0.27 4,982 14.45 0.1595
2021-11-12 2021-09-30 13F Gallagher Arthur J COM 363576109 29,283 381 1.32 4,353 7.51 0.1426
2021-08-12 2021-06-30 13F Gallagher Arthur J COM 363576109 28,902 -815 -2.74 4,049 9.20 0.1284
2021-05-11 2021-03-31 13F Gallagher Arthur J COM 363576109 29,717 106 0.36 3,708 1.23 0.1299
2021-02-04 2020-12-31 13F Gallagher Arthur J COM 363576109 29,611 -9,968 -25.19 3,663 -12.35 0.1364
2020-11-12 2020-09-30 13F Gallagher Arthur J COM 363576109 39,579 21 0.05 4,179 8.38 0.1506
2020-08-13 2020-06-30 13F Gallagher Arthur J COM 363576109 39,558 -52,560 -57.06 3,856 -48.65 0.1515
2020-05-14 2020-03-31 13F Gallagher Arthur J COM 363576109 92,118 1,080 1.19 7,509 -13.39 0.3337
2020-02-10 2019-12-31 13F Gallagher Arthur J COM 363576109 91,038 488 0.54 8,670 6.89 0.2815
2019-11-13 2019-09-30 13F Gallagher Arthur J COM 363576109 90,550 -1,096 -1.20 8,111 1.05 0.2848
2019-08-13 2019-06-30 13F Gallagher Arthur J COM 363576109 91,646 3,121 3.53 8,027 16.10 0.2766
2019-05-10 2019-03-31 13F Gallagher Arthur J COM 363576109 88,525 19,780 28.77 6,914 36.45 0.2610
2019-02-05 2018-12-31 13F Gallagher Arthur J COM 363576109 68,745 4,990 7.83 5,067 6.76 0.2235
2018-11-08 2018-09-30 13F Gallagher Arthur J COM 363576109 63,755 8,900 16.22 4,746 32.53 0.1908
2018-08-09 2018-06-30 13F Gallagher Arthur J COM 363576109 54,855 3,920 7.70 3,581 2.29 0.1645
2018-05-14 2018-03-31 13F Gallagher Arthur J COM 363576109 50,935 2,887 6.01 3,501 15.16 0.1740
2018-01-29 2017-12-31 13F Gallagher Arthur J COM 363576109 48,048 1,589 3.42 3,040 6.29 0.1461
2017-10-27 2017-09-30 13F Gallagher Arthur J COM 363576109 46,459 2,562 5.84 2,860 13.81 0.1508
2017-07-19 2017-06-30 13F Gallagher Arthur J COM 363576109 43,897 754 1.75 2,513 3.03 0.1357
2017-04-19 2017-03-31 13F Gallagher Arthur J COM 363576109 43,143 7,175 19.95 2,439 30.50 0.1399
2017-01-25 2016-12-31 13F Gallagher Arthur J COM 363576109 35,968 1,042 2.98 1,869 5.18 0.1219
2016-10-26 2016-09-30 13F Gallagher Arthur J COM 363576109 34,926 264 0.76 1,777 7.70 0.1137
2016-07-20 2016-06-30 13F Gallagher Arthur J COM 363576109 34,662 277 0.81 1,650 7.91 0.1127
2016-05-09 2016-03-31 13F Gallagher Arthur J COM 363576109 34,385 294 0.86 1,529 9.53 0.1231
2016-02-04 2015-12-31 13F Gallagher Arthur J COM 363576109 34,091 302 0.89 1,396 0.07 0.1149
2015-10-30 2015-09-30 13F Gallagher Arthur J COM 363576109 33,789 291 0.87 1,395 -11.93 0.1144
2015-08-12 2015-06-30 13F Gallagher Arthur J COM 363576109 33,498 -759 -2.22 1,584 -1.12 0.1196
2015-05-12 2015-03-31 13F Gallagher Arthur J COM 363576109 34,257 261 0.77 1,602 0.06 0.1193
2015-02-12 2014-12-31 13F Gallagher Arthur J COM 363576109 33,996 3,135 10.16 1,601 14.36 0.1413
2014-11-14 2014-09-30 13F Gallagher Arthur J COM 363576109 30,861 1,723 5.91 1,400 3.09 0.1322
2014-08-13 2014-06-30 13F Gallagher Arthur J COM 363576109 29,138 206 0.71 1,358 -1.38 0.1312
2014-05-14 2014-03-31 13F Gallagher Arthur J COM 363576109 28,932 202 0.70 1,377 2.15 0.1393
2014-02-13 2013-12-31 13F Gallagher Arthur J COM 363576109 28,730 198 0.69 1,348 8.27 0.1486
2013-11-12 2013-09-30 13F/A-1 Gallagher Arthur J COM 363576109 28,532 203 0.72 1,245 0.57 0.1464
2013-11-05 2013-09-30 13F Gallagher Arthur J COM 363576109 28,532 1,245
2013-08-12 2013-06-30 13F Gallagher Arthur J COM 363576109 28,329 28,329 1,238 0.2382
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.