Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionPnc Financial Services Group, Inc.
Latest Disclosed Ownership119,356 shares
Latest Disclosed Value $ 25,850,082
Pnc Financial Services Group, Inc. reports 37.30% increase in ownership of AJG / Arthur J. Gallagher & Co.

On May 8, 2026 - Pnc Financial Services Group, Inc. filed a 13F-HR form disclosing ownership of 119,356 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $25,850,082 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 86,933 shares of Arthur J. Gallagher & Co.. This represents a change in shares of 37.30% 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 GALLAGHER ARTHUR J COM 363576109 119,356 32,423 37.30 25,850 14.90 0.0025
2026-02-06 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 86,933 -3,442 -3.81 22,497 -19.63 0.0123
2025-11-07 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 90,375 3,229 3.71 27,993 0.34 0.0170
2025-08-08 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 87,146 18,733 27.38 27,897 18.12 0.0180
2025-05-09 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 68,413 5,094 8.04 23,619 31.41 0.0124
2025-02-07 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 63,319 3,383 5.64 17,973 6.58 0.0120
2024-11-08 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 59,936 2,384 4.14 16,864 13.01 0.0108
2024-08-09 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 57,552 2,494 4.53 14,924 8.40 0.0099
2024-05-10 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 55,058 -2,628 -4.56 13,767 6.12 0.0096
2024-03-22 2023-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 57,686 576 1.01 12,972 -0.35 0.0102
2024-02-09 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 57,686 576 12,972 0.0102
2023-11-13 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 57,110 -2,679 -4.48 13,017 -0.84 0.0111
2023-08-11 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 59,789 587 0.99 13,128 15.91 0.0112
2023-05-15 2023-03-31 13F GALLAGHER ARTHUR J COM 363576109 59,202 517 0.88 11,326 2.36 0.0099
2023-02-10 2022-12-31 13F GALLAGHER ARTHUR J COM 363576109 58,685 -3,007 -4.87 11,065 4.74 0.0106
2022-11-10 2022-09-30 13F GALLAGHER ARTHUR J COM 363576109 61,692 357 0.58 10,563 5.62 0.0110
2022-08-12 2022-06-30 13F GALLAGHER ARTHUR J COM 363576109 61,335 -81 -0.13 10,001 -6.72 0.0098
2022-05-12 2022-03-31 13F GALLAGHER ARTHUR J COM 363576109 61,416 -5,745 -8.55 10,722 -5.90 0.0094
2022-02-11 2021-12-31 13F GALLAGHER Common Stock 363576109 67,161 45,454 209.40 11,394 253.19 0.0094
2021-11-05 2021-09-30 13F GALLAGHER Common Stock 363576109 21,707 -1,785 -7.60 3,226 -1.98 0.0030
2021-08-06 2021-06-30 13F GALLAGHER Common Stock 363576109 23,492 294 1.27 3,291 13.64 0.0030
2021-05-07 2021-03-31 13F GALLAGHER Common Stock 363576109 23,198 -383 -1.62 2,896 -0.69 0.0028
2021-02-12 2020-12-31 13F GALLAGHER Common Stock 363576109 23,581 84 0.36 2,916 17.53 0.0029
2020-11-06 2020-09-30 13F GALLAGHER Common Stock 363576109 23,497 -858 -3.52 2,481 4.46 0.0031
2020-08-28 2020-06-30 13F/A-1 GALLAGHER Common Stock 363576109 24,355 625 2.63 2,375 22.80 0.0032
2020-08-07 2020-06-30 13F GALLAGHER Common Stock 363576109 24,355 625 2,375 493.1412
2020-05-08 2020-03-31 13F GALLAGHER Common Stock 363576109 23,730 314 1.34 1,934 -13.27 0.0024
2020-02-07 2019-12-31 13F GALLAGHER Common Stock 363576109 23,416 -4,916 -17.35 2,230 -12.17 0.0022
2019-11-08 2019-09-30 13F GALLAGHER Common Stock 363576109 28,332 -590 -2.04 2,539 0.20 0.0025
2019-08-09 2019-06-30 13F GALLAGHER Common Stock 363576109 28,922 2,423 9.14 2,534 22.53 0.0025
2019-05-10 2019-03-31 13F GALLAGHER Common Stock 363576109 26,499 144 0.55 2,068 6.38 0.0021
2019-02-08 2018-12-31 13F GALLAGHER Common Stock 363576109 26,355 -1,134 -4.13 1,944 -4.94 0.0022
2018-11-09 2018-09-30 13F GALLAGHER Common Stock 363576109 27,489 -1,871 -6.37 2,045 6.68 0.0019
2018-08-10 2018-06-30 13F GALLAGHER Common Stock 363576109 29,360 -12,565 -29.97 1,917 -33.48 0.0019
2018-05-11 2018-03-31 13F GALLAGHER Common Stock 363576109 41,925 9,693 30.07 2,882 41.21 0.0028
2018-02-09 2017-12-31 13F GALLAGHER Common Stock 363576109 32,232 -1,033 -3.11 2,041 -0.39 0.0020
2017-11-13 2017-09-30 13F GALLAGHER Common Stock 363576109 33,265 905 2.80 2,049 10.64 0.0021
2017-08-11 2017-06-30 13F GALLAGHER 363576109 32,360 753 2.38 1,852 3.64 0.0020
2017-05-12 2017-03-31 13F GALLAGHER Common Stock 363576109 31,607 1,853 6.23 1,787 15.66 0.0020
2017-02-10 2016-12-31 13F GALLAGHER Common Stock 363576109 29,754 -1,890 -5.97 1,545 -4.04 0.0018
2016-11-04 2016-09-30 13F GALLAGHER Common Stock 363576109 31,644 -2,346 -6.90 1,610 -0.49 0.0019
2016-08-05 2016-06-30 13F GALLAGHER Common Stock 363576109 33,990 1,512 4.66 1,618 12.05 0.0019
2016-05-06 2016-03-31 13F GALLAGHER Common Stock 363576109 32,478 3,894 13.62 1,444 23.31 0.0017
2016-02-05 2015-12-31 13F GALLAGHER Common Stock 363576109 28,584 -2,458 -7.92 1,171 -8.52 0.0014
2015-11-06 2015-09-30 13F GALLAGHER Common Stock 363576109 31,042 4,401 16.52 1,280 1.59 0.0015
2015-08-05 2015-06-30 13F GALLAGHER Common Stock 363576109 26,641 -5,582 -17.32 1,260 -16.28 0.0014
2015-05-08 2015-03-31 13F GALLAGHER Common Stock 363576109 32,223 15,635 94.25 1,505 92.70 0.0017
2015-02-06 2014-12-31 13F/A-1 GALLAGHER ARTHUR J COM 363576109 16,588 -208 -1.24 781 2.49 0.0009
2015-02-06 2014-12-31 13F GALLAGHER ARTHUR J COM 363576109 16,588 781
2014-11-07 2014-09-30 13F GALLAGHER ARTHUR J COM 363576109 16,796 4,486 36.44 762 32.52 0.0009
2014-08-08 2014-06-30 13F GALLAGHER ARTHUR J COM 363576109 12,310 1,897 18.22 575 15.93 0.0007
2014-05-09 2014-03-31 13F GALLAGHER ARTHUR J COM 363576109 10,413 456 4.58 496 6.21 0.0007
2014-02-07 2013-12-31 13F GALLAGHER ARTHUR J COM 363576109 9,957 -1,407 -12.38 467 -6.04 0.0006
2013-11-01 2013-09-30 13F GALLAGHER ARTHUR J COM 363576109 11,364 662 6.19 497 6.42 0.0007
2013-08-02 2013-06-30 13F GALLAGHER ARTHUR J COM 363576109 10,702 10,702 467 0.0007
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.