Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionKLCM Advisors, Inc.
Latest Disclosed Ownership1,022 shares
Latest Disclosed Value $ 221,384
KLCM Advisors, Inc. ownership in AJG / Arthur J. Gallagher & Co.

On April 30, 2026 - KLCM Advisors, Inc. filed a 13F-HR form disclosing ownership of 1,022 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $221,384 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 1,022 shares of Arthur J. Gallagher & Co.. This represents a change in shares of 0.00% 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)
2026-04-30 2026-03-31 13F GALLAGHER ARTHUR J COM 363576109 1,022 0 0.00 221 -16.29 0.0187
2026-02-04 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,022 -10 -0.97 264 -17.24 0.0227
2025-11-13 2025-09-30 13F Arthur J. Gallagher COM 363576109 1,032 67 6.94 320 3.24 0.0319
2025-08-04 2025-06-30 13F Arthur J. Gallagher COM 363576109 965 0 0.00 309 -7.21 0.0329
2025-05-13 2025-03-31 13F Arthur J. Gallagher COM 363576109 965 0 0.00 333 21.98 0.0390
2025-01-31 2024-12-31 13F Arthur J. Gallagher COM 363576109 965 0 0.00 274 0.74 0.0318
2024-11-07 2024-09-30 13F Arthur J. Gallagher COM 363576109 965 0 0.00 272 8.40 0.0322
2024-08-14 2024-06-30 13F Arthur J. Gallagher COM 363576109 965 100 11.56 250 15.74 0.0309
2024-05-16 2024-03-31 13F Arthur J. Gallagher COM 363576109 865 -187 -17.78 216 -8.47 0.0278
2024-01-31 2023-12-31 13F Arthur J. Gallagher COM 363576109 1,052 -6 -0.57 237 -2.07 0.0365
2023-11-07 2023-09-30 13F Arthur J. Gallagher COM 363576109 1,058 6 0.57 241 4.78 0.0453
2023-08-09 2023-06-30 13F Arthur J. Gallagher COM 363576109 1,052 1,052 231 0.0452
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.