Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionClose Asset Management Ltd
Latest Disclosed Ownership1,236 shares
Latest Disclosed Value $ 268
Close Asset Management Ltd reports 84.66% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 12, 2026 - Close Asset Management Ltd filed a 13F-HR form disclosing ownership of 1,236 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $268 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 8,058 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -84.66% 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)
2026-05-12 2026-03-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 1,236 -6,822 -84.66 0 -100.00 0.0073
2026-02-10 2025-12-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 8,058 -3,786 -31.97 2 -33.33 0.0462
2025-11-12 2025-09-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 11,844 -110,851 -90.35 4 -92.31 0.0816
2025-08-12 2025-06-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 122,695 -184,734 -60.09 39 -63.21 1.1476
2025-05-06 2025-03-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 307,429 -85,215 -21.70 106 -4.50 3.0512
2025-01-28 2024-12-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 392,644 0 0.00 111 0.91 3.1386
2024-11-12 2024-09-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 392,644 27,104 7.41 110 17.02 3.3964
2024-08-07 2024-06-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 365,540 8,930 2.50 95 5.62 3.2213
2024-05-14 2024-03-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 356,610 2,960 0.84 89 12.66 3.2563
2024-02-08 2023-12-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 353,650 107,424 43.63 80 41.07 3.3291
2023-10-11 2023-09-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 246,226 -130,134 -34.58 56 -31.71 2.8960
2023-07-26 2023-06-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 376,360 3,060 0.82 83 15.49 3.8764
2023-04-19 2023-03-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 373,300 120,000 47.37 71 51.06 3.5344
2023-01-27 2022-12-31 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 253,300 -4,500 -1.75 48 -99.89 2.5379
2022-10-26 2022-09-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 257,800 0 0.00 44,306 5.34 2.5088
2022-07-29 2022-06-30 13F ARTHUR J GALLAGHER & CO COM USD1.00 COM 363576109 257,800 257,800 42,060 1.9921
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.