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

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionNixon Peabody Trust Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Nixon Peabody Trust Co closes position in AJG / Arthur J. Gallagher & Co.

On April 27, 2026 - Nixon Peabody Trust Co filed a 13F-HR form disclosing ownership of 0 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 34,155 shares of Arthur J. Gallagher & Co.. The current value of the position is $0 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)
2026-04-27 2026-03-31 13F Arthur J Gallagher Com 363576109 0 -100.00 0
2026-02-06 2025-12-31 13F Arthur J Gallagher Com 363576109 34,155 32,431 1,881.15 8,839 1,558.16 0.6693
2025-10-17 2025-09-30 13F Arthur J Gallagher Com 363576109 1,724 -275 -13.76 534 -16.59 0.0391
2025-08-08 2025-06-30 13F Arthur J Gallagher Com 363576109 1,999 -26 -1.28 640 -8.58 0.0496
2025-04-10 2025-03-31 13F Arthur J Gallagher Com 363576109 2,025 -550 -21.36 699 -4.25 0.0594
2025-02-05 2024-12-31 13F Arthur J Gallagher Com 363576109 2,575 175 7.29 731 8.15 0.0602
2024-11-07 2024-09-30 13F Arthur J Gallagher Com 363576109 2,400 0 0.00 675 8.52 0.0562
2024-07-26 2024-06-30 13F Arthur J Gallagher Com 363576109 2,400 1,499 166.37 622 176.44 0.0553
2024-05-07 2024-03-31 13F Arthur J Gallagher Com 363576109 901 0 0.00 225 11.39 0.0207
2024-02-09 2023-12-31 13F Arthur J Gallagher Com 363576109 901 0 0.00 203 -1.46 0.0227
2023-10-23 2023-09-30 13F Arthur J Gallagher Com 363576109 901 901 205 0.1720
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.