Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionEthic Inc.
Latest Disclosed Ownership24,250 shares
Latest Disclosed Value $ 5,252,051
Ethic Inc. reports 19.57% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On April 27, 2026 - Ethic Inc. filed a 13F-HR form disclosing ownership of 24,250 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $5,252,051 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 30,152 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -19.57% 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)
2026-04-27 2026-03-31 13F GALLAGHER ARTHUR J COM 363576109 24,250 -5,902 -19.57 5,252 -32.69 0.0823
2026-02-03 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 30,152 -625 -2.03 7,803 -18.14 0.1200
2025-10-17 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 30,777 4,724 18.13 9,533 15.16 0.1569
2025-07-30 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 26,053 -7,187 -21.62 8,278 -27.58 0.1483
2025-05-13 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 33,240 4,650 16.26 11,430 40.84 0.2316
2025-02-14 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 28,590 803 2.89 8,115 16.81 0.1637
2024-11-13 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 27,787 2,049 7.96 6,948 4.09 0.1756
2024-08-13 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 25,738 -2,049 -7.37 6,674 -3.93 0.1565
2024-05-13 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 27,787 578 2.12 6,948 13.55 0.1755
2024-02-14 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 27,209 1,725 6.77 6,119 5.34 0.1810
2023-11-14 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 25,484 1,179 4.85 5,808 8.85 0.2038
2023-08-14 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 24,305 3,624 17.52 5,337 34.88 0.1979
2023-05-12 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 20,681 3,691 21.72 3,956 23.51 0.1605
2023-02-14 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 16,990 1,739 11.40 3,203 22.67 0.1730
2022-11-14 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 15,251 -786 -4.90 2,611 -0.15 0.1772
2022-08-10 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 16,037 6,403 66.46 2,615 55.47 0.1823
2022-05-16 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 9,634 2,910 43.28 1,682 47.41 0.1161
2022-02-14 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 6,724 983 17.12 1,141 33.76 0.0880
2021-11-15 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,741 -300 -4.97 853 0.83 0.0873
2021-08-10 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 6,041 2,035 50.80 846 69.20 0.1026
2021-05-13 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 4,006 1,832 84.27 500 85.87 0.0891
2021-02-10 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 2,174 183 9.19 269 28.10 0.0711
2020-10-27 2020-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,991 -112 -5.33 210 2.44 0.0803
2020-08-12 2020-06-30 13F GALLAGHER ARTHUR J COM 363576109 2,103 2,103 205 0.1166
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.