Arthur J. Gallagher & Co.
US ˙ NYSE ˙ US3635761097

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionAllworth Financial LP
Latest Disclosed Ownership4,779 shares
Latest Disclosed Value $ 1,035,074
Allworth Financial LP reports 4.02% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 14, 2026 - Allworth Financial LP filed a 13F-HR form disclosing ownership of 4,779 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $1,035,036 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 4,979 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -4.02% during the quarter. The current value of the position is $1,008,369 USD.

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 4,779 -200 -4.02 1,035 -19.64 0.0042
2026-02-05 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,979 -6,084 -54.99 1,288 -62.41 0.0053
2025-12-02 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 11,063 208 1.92 3,427 -1.38 0.0151
2025-08-07 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 10,855 6,917 175.65 3,475 166.21 0.0166
2025-04-30 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 3,938 228 6.15 1,305 19.94 0.0074
2025-01-30 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 3,710 763 25.89 1,089 31.24 0.0060
2024-10-23 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 2,947 79 2.75 829 6.97 0.0050
2024-07-24 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 2,868 -2,133 -42.65 775 -38.00 0.0050
2024-04-25 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 5,001 -925 -15.61 1,251 -6.16 0.0088
2024-01-24 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 5,926 135 2.33 1,333 0.99 0.0102
2023-10-31 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,791 100 1.76 1,320 5.60 0.0113
2023-07-18 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 5,691 -721 -11.24 1,250 1.88 0.0106
2023-04-18 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 6,412 1,884 41.61 1,227 43.73 0.0123
2023-01-13 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,528 3,409 304.65 854 344.27 0.0095
2022-11-14 2022-09-30 13F/A-1 GALLAGHER ARTHUR J COM 363576109 1,119 129 13.03 192 19.25 0.0024
2022-10-18 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,119 129 192 0.0024
2022-07-13 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 990 -184 -15.67 161 -21.46 0.0022
2022-04-22 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,174 34 2.98 205 6.22 0.0026
2022-01-21 2021-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,140 -114 -9.09 193 3.76 0.0027
2021-11-02 2021-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,254 247 24.53 186 31.91 0.0031
2021-08-02 2021-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,007 732 266.18 141 314.71 0.0026
2021-04-29 2021-03-31 13F GALLAGHER ARTHUR J COM 363576109 275 275 34 0.0007
2020-07-24 2020-06-30 13F GALLAGHER ARTHUR J COM 363576109 0 -710 -100.00 0 -100.00
2020-04-17 2020-03-31 13F GALLAGHER ARTHUR J COM 363576109 710 710 57 0.0019
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.