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

SecurityAJG / Arthur J. Gallagher & Co.
InstitutionEllevest, Inc.
Latest Disclosed Ownership1,551 shares
Latest Disclosed Value $ 335,916
Ellevest, Inc. reports 26.74% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On May 11, 2026 - Ellevest, Inc. filed a 13F-HR form disclosing ownership of 1,551 shares of Arthur J. Gallagher & Co. (US:AJG) valued at $335,916 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,117 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -26.74% during the quarter. The current value of the position is $314,078 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)
2026-05-11 2026-03-31 13F GALLAGHER ARTHUR J & CO COM COM 363576109 1,551 -566 -26.74 336 -38.76 0.0467
2026-02-10 2025-12-31 13F GALLAGHER ARTHUR J & CO COM COM 363576109 2,117 396 23.01 548 2.63 0.0758
2025-11-14 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,721 54 3.24 533 0.00 0.0761
2025-08-05 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,667 -604 -26.60 534 -32.02 0.0851
2025-05-14 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,271 568 33.35 784 62.32 0.0522
2025-02-14 2024-12-31 13F GALLAGHER ARTHUR J COM 363576109 1,703 326 23.67 483 24.81 0.0279
2024-11-13 2024-09-30 13F GALLAGHER ARTHUR J COM 363576109 1,377 -122 -8.14 387 -0.26 0.0215
2024-08-14 2024-06-30 13F GALLAGHER ARTHUR J COM 363576109 1,499 -593 -28.35 389 -25.81 0.0233
2024-05-13 2024-03-31 13F GALLAGHER ARTHUR J COM 363576109 2,092 12 0.58 523 11.99 0.0325
2024-02-06 2023-12-31 13F GALLAGHER ARTHUR J COM 363576109 2,080 -6 -0.29 468 -1.68 0.0319
2023-11-09 2023-09-30 13F GALLAGHER ARTHUR J COM 363576109 2,086 -96 -4.40 475 -0.84 0.0365
2023-08-09 2023-06-30 13F GALLAGHER ARTHUR J COM 363576109 2,182 614 39.16 479 60.20 0.0360
2023-05-04 2023-03-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 1,568 -44 -2.73 300 -1.32 0.0233
2023-02-03 2022-12-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 1,612 138 9.36 304 20.24 0.0256
2022-11-02 2022-09-30 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 1,474 -3 -0.20 252 4.56 0.0239
2022-07-18 2022-06-30 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 1,477 1,156 360.12 241 330.36 0.0226
2022-04-19 2022-03-31 13F GALLAGHER ARTHUR J Stock 363576109 321 41 14.64 56 16.67 0.0047
2022-01-24 2021-12-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 280 66 30.84 48 50.00 0.0043
2021-10-19 2021-09-30 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 214 -6 -2.73 32 3.23 0.0031
2021-07-13 2021-06-30 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 220 11 5.26 31 19.23 0.0031
2021-05-03 2021-03-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 209 -26 -11.06 26 -10.34 0.0031
2021-02-04 2020-12-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 235 20 9.30 29 26.09 0.0042
2020-10-26 2020-09-30 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 215 -81 -27.36 23 -20.69 0.0041
2020-07-06 2020-06-30 13F GALLAGHER ARTHUR J Stock 363576109 296 -36 -10.84 29 7.41 0.0062
2020-04-13 2020-03-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 332 178 115.58 27 80.00 0.0075
2020-02-05 2019-12-31 13F GALLAGHER ARTHUR J & CO COM Stock 363576109 154 154 15 0.0042
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.