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

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionPrudential Plc
Latest Disclosed Ownership5,074 shares
Latest Disclosed Value $ 1,098,927
Prudential Plc ownership in AJG / Arthur J. Gallagher & Co.

On May 14, 2026 - Prudential Plc filed a 13F-HR form disclosing ownership of 5,074 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $1,098,927 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 5,074 shares of Arthur J. Gallagher & Co.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,027,485 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 5,074 0 0.00 1,099 -16.37 0.0047
2026-02-11 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 5,074 0 0.00 1,313 -16.42 0.0104
2025-11-14 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,074 -22,188 -81.39 1,572 -82.00 0.0115
2025-08-12 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 27,262 18,038 195.56 8,727 174.09 0.0526
2025-05-13 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 9,224 4,773 107.23 3,184 152.10 0.0159
2025-02-13 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 4,451 -3,974 -47.17 1,263 -46.71 0.0064
2024-11-13 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 8,425 4,776 130.89 2,371 150.53 0.0119
2024-08-07 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,649 1,082 42.15 946 47.58 0.0064
2024-05-14 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,567 -7,387 -74.21 642 -71.36 0.0049
2024-02-14 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 9,954 -26 -0.26 2,238 -1.58 0.0227
2023-11-13 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 9,980 -958 -8.76 2,275 -5.29 0.0253
2023-08-14 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 10,938 -815 -6.93 2,402 6.81 0.0281
2023-05-12 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 11,753 57 0.49 2,248 1.95 0.0264
2023-02-09 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 11,696 6,232 114.06 2,205 135.58 0.0277
2022-11-14 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 5,464 748 15.86 936 21.72 0.0148
2022-08-12 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 4,716 -86 -1.79 769 -8.23 0.0139
2022-05-13 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 4,802 4,802 838 0.0121
2020-02-13 2019-12-31 13F GALLAGHER ARTHUR J COM 363576109 0 -3,365,326 -100.00 0 -100.00
2019-11-12 2019-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,365,326 -254,216 -7.02 302,873 -4.91 0.8909
2019-10-04 2019-06-30 13F/A-1 GALLAGHER ARTHUR J COM 363576109 3,619,542 -46,499 -1.27 318,513 11.24 0.9737
2019-08-14 2019-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,619,542 -46,499 318,513
2019-10-04 2019-03-31 13F/A-1 GALLAGHER AJ &CO COM USD1.00 363576109 3,666,041 -299,124 -7.54 286,318 -2.02 1.0310
2019-05-13 2019-03-31 13F GALLAGHER AJ &CO COM USD1.00 363576109 3,666,041 -299,124 286,318
2019-10-04 2018-12-31 13F/A-1 GALLAGHER AJ &CO COM USD1 363576109 3,965,165 -36,862 -0.92 292,233 -1.91 1.1768
2019-02-13 2018-12-31 13F GALLAGHER AJ &CO COM USD1 363576109 3,965,165 -36,862 292,233
2019-10-03 2018-09-30 13F/A-1 GALLAGHER AJ &CO COM USD1 363576109 4,002,027 -229,238 -5.42 297,910 7.85 0.9615
2018-11-14 2018-09-30 13F GALLAGHER AJ &CO COM USD1 363576109 4,002,027 -229,238 297,910
2018-08-14 2018-06-30 13F GALLAGHER AJ &CO COM USD1 363576109 4,231,265 -75,264 -1.75 276,217 -6.68 0.8643
2018-05-15 2018-03-31 13F GALLAGHER AJ &CO COM USD1 363576109 4,306,529 -386,658 -8.24 295,988 -0.34 0.9241
2018-02-14 2017-12-31 13F GALLAGHER AJ &CO COM USD1 363576109 4,693,187 -21,775 -0.46 296,985 2.34 0.9045
2017-11-14 2017-09-30 13F GALLAGHER AJ &CO COM USD1 363576109 4,714,962 -254,359 -5.12 290,206 2.01 0.9156
2017-08-14 2017-06-30 13F GALLAGHER AJ &CO COM USD1 363576109 4,969,321 -739,220 -12.95 284,495 -11.86 0.9322
2017-05-15 2017-03-31 13F GALLAGHER AJ &CO COM USD1 363576109 5,708,541 -288,880 -4.82 322,761 3.57 1.0818
2017-02-09 2016-12-31 13F GALLAGHER AJ &CO COM USD1 363576109 5,997,421 -101,648 -1.67 311,626 0.44 1.0956
2016-11-14 2016-09-30 13F GALLAGHER AJ &CO COM USD1 363576109 6,099,069 -210,789 -3.34 310,260 3.30 1.1708
2016-08-09 2016-06-30 13F GALLAGHER AJ &CO COM USD1 363576109 6,309,858 -298,997 -4.52 300,349 2.17 1.1787
2016-05-13 2016-03-31 13F GALLAGHER AJ &CO COM USD1 363576109 6,608,855 -76,626 -1.15 293,962 7.40 1.1924
2016-02-12 2015-12-31 13F GALLAGHER AJ &CO COM USD1 363576109 6,685,481 -641,066 -8.75 273,704 -9.50 1.1119
2015-11-13 2015-09-30 13F GALLAGHER AJ &CO COM USD1 363576109 7,326,547 -1,087,143 -12.92 302,440 -24.00 1.2925
2015-08-14 2015-06-30 13F GALLAGHER AJ &CO COM USD1 363576109 8,413,690 317,870 3.93 397,968 5.15 1.5193
2015-05-15 2015-03-31 13F GALLAGHER AJ &CO COM USD1 363576109 8,095,820 -851,438 -9.52 378,480 -10.15 1.6696
2015-02-13 2014-12-31 13F GALLAGHER AJ &CO COM USD1 363576109 8,947,258 323,796 3.75 421,237 7.69 1.7850
2014-11-14 2014-09-30 13F GALLAGHER AJ &CO COM USD1 363576109 8,623,462 1,327,612 18.20 391,160 15.05 1.6182
2014-08-14 2014-06-30 13F GALLAGHER AJ &CO COM USD1 363576109 7,295,850 1,458,818 24.99 339,987 22.42 1.4178
2014-05-15 2014-03-31 13F GALLAGHER AJ &CO COM USD1 363576109 5,837,032 302,780 5.47 277,726 6.93 1.2351
2014-02-14 2013-12-31 13F GALLAGHER ARTHUR J COM 363576109 5,534,252 1,807,452 48.50 259,722 59.66 1.1127
2013-12-18 2013-09-30 13F/A-1 GALLAGHER ARTHUR J COM 363576109 3,726,800 0 0.00 162,675 -0.09 0.8290
2013-11-15 2013-09-30 13F GALLAGHER ARTHUR J COM 363576109 3,726,800 162,675
2013-08-15 2013-06-30 13F GALLAGHER ARTHUR J COM 363576109 3,726,800 3,726,800 162,824 0.8808
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.