Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionEverett Harris & Co /ca/
Latest Disclosed Ownership4,990 shares
Latest Disclosed Value $ 1,080,734
Everett Harris & Co /ca/ reports 0.83% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 8, 2026 - Everett Harris & Co /ca/ filed a 13F-HR form disclosing ownership of 4,990 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $1,080,734 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 5,032 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -0.83% 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)
2026-05-08 2026-03-31 13F Arthur J Gallagher COM 363576109 4,990 -42 -0.83 1,081 -17.05 0.0139
2026-02-11 2025-12-31 13F Arthur J Gallagher COM 363576109 5,032 864 20.73 1,302 0.93 0.0158
2025-11-03 2025-09-30 13F Arthur J Gallagher COM 363576109 4,168 -25 -0.60 1,291 -3.87 0.0159
2025-08-08 2025-06-30 13F Arthur J Gallagher COM 363576109 4,193 0 0.00 1,342 -7.26 0.0172
2025-05-12 2025-03-31 13F Arthur J Gallagher COM 363576109 4,193 -210 -4.77 1,448 15.85 0.0186
2025-01-24 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,403 520 13.39 1,250 14.38 0.0158
2024-10-18 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,883 -33 -0.84 1,093 7.59 0.0135
2024-08-02 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,916 -105 -2.61 1,015 1.00 0.0130
2024-04-19 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 4,021 732 22.26 1,005 35.99 0.0133
2024-01-18 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 3,289 25 0.77 740 -0.54 0.0106
2023-10-24 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,264 965 41.97 744 47.42 0.0116
2023-07-27 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 2,299 135 6.24 505 22.03 0.0077
2023-04-25 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,164 370 20.62 414 22.19 0.0067
2023-01-20 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,794 1,794 338 0.0058
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.