Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionGables Capital Management Inc.
Latest Disclosed Ownership450 shares
Latest Disclosed Value $ 97,461
Gables Capital Management Inc. reports 22.41% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 1, 2026 - Gables Capital Management Inc. filed a 13F-HR form disclosing ownership of 450 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $97,461 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 580 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -22.41% 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)
2026-05-01 2026-03-31 13F GALLAGHER ARTHUR J COM 363576109 450 -130 -22.41 97 -35.33 0.0413
2026-02-06 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 150 -16.20 0.0634
2025-11-06 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 180 -3.24 0.0770
2025-07-30 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 186 -7.50 0.0878
2025-05-08 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 200 21.95 0.0990
2025-02-07 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 165 0.61 0.0794
2024-10-25 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 163 8.67 0.0824
2024-08-08 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 150 3.45 0.0786
2024-05-06 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 145 11.54 0.0799
2024-02-08 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 580 0 0.00 130 -1.52 0.0810
2023-11-03 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 580 -105 -15.33 132 -12.00 0.0920
2023-08-03 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 685 0 0.00 150 14.50 0.0984
2023-05-04 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 685 0 0.00 131 1.55 0.0915
2023-02-06 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 685 0 0.00 129 10.26 0.0940
2022-11-01 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 685 -50 -6.80 117 -2.50 0.0938
2022-07-18 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 120 -6.25 0.0906
2022-05-02 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 128 2.40 0.0803
2022-02-09 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 125 14.68 0.0745
2021-11-12 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 109 5.83 0.0711
2021-08-03 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 103 11.96 0.0705
2021-05-12 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 92 1.10 0.0504
2021-02-03 2020-12-31 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 91 16.67 0.0531
2020-11-12 2020-09-30 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 78 8.33 0.0503
2020-07-30 2020-06-30 13F GALLAGHER ARTHUR J COM 363576109 735 0 0.00 72 20.00 0.0499
2020-05-07 2020-03-31 13F GALLAGHER ARTHUR J COM 363576109 735 -350 -32.26 60 -41.75 0.0493
2020-02-10 2019-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,085 0 0.00 103 7.29 0.0690
2019-10-30 2019-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,085 0 0.00 96 1.05 0.0679
2019-07-31 2019-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,085 0 0.00 95 11.76 0.0775
2019-04-30 2019-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,085 350 47.62 85 57.41 0.0684
2019-02-08 2018-12-31 13F GALLAGHER ARTHUR J COM 363576109 735 -350 -32.26 54 -33.33 0.0470
2018-11-05 2018-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,085 0 0.00 81 12.50 0.0617
2018-08-10 2018-06-30 13F/A-1 GALLAGHER ARTHUR J COM 363576109 1,085 0 0.00 72 -4.00 0.0589
2018-08-03 2018-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,085 0 72 0.0592
2018-05-17 2018-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,085 1,085 75 0.0663
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.