Acadian Asset Management Inc.
US ˙ NYSE ˙ US10948W1036

SecurityAAMI / Acadian Asset Management Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership7,621 shares
Latest Disclosed Value $ 415
Amalgamated Bank reports 1.15% decrease in ownership of AAMI / Acadian Asset Management Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 7,621 shares of Acadian Asset Management Inc. (US:AAMI) valued at $414,735 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 7,710 shares of Acadian Asset Management Inc.. The current value of the position is $577,824 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.

Upgrade to unlock premium data and export to Excel .

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 ACADIAN ASSET MANAGEMENT COM 10948W103 7,621 -89 -1.15 0 0.0032
2026-02-05 2025-12-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 7,710 -4 -0.05 0 0.0026
2025-10-29 2025-09-30 13F ACADIAN ASSET MANAGEMENT COM 10948W103 7,714 52 0.68 0 0.0027
2025-08-04 2025-06-30 13F ACADIAN ASSET MANAGEMENT COM 10948W103 7,662 -306 -3.84 0 0.0021
2025-04-25 2025-03-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 7,968 -175 -2.15 0 0.0018
2025-02-04 2024-12-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 8,143 -74 -0.90 0 0.0018
2024-10-30 2024-09-30 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 8,217 -869 -9.56 0 0.0017
2024-08-12 2024-06-30 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 9,086 -1,405 -13.39 0 0.0017
2024-04-23 2024-03-31 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 10,491 -2,453 -18.95 0 0.0021
2024-02-06 2023-12-31 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 12,944 -769 -5.61 0 0.0020
2023-11-08 2023-09-30 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 13,713 0 0.00 0 0.0023
2023-08-11 2023-06-30 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 13,713 -875 -6.00 0 0.0023
2023-05-02 2023-03-31 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 14,588 -1,007 -6.46 0 0.0029
2023-02-10 2022-12-31 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 15,595 0 0.00 0 -100.00 0.0029
2022-11-09 2022-09-30 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 15,595 134 0.87 233 -16.19 0.0022
2022-08-15 2022-06-30 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 15,461 -2,590 -14.35 278 -36.53 0.0026
2022-08-25 2022-03-31 13F/A-1 BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 18,051 -4,637 -20.44 438 -24.61 0.0034
2022-06-30 2022-03-31 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 18,051 -4,637 438 0.0035
2022-02-15 2021-12-31 13F/A-1 BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 22,688 -8,691 -27.70 581 -29.15 0.0043
2022-02-15 2021-12-31 13F BRIGHTSPHERE INVT GROUP INC COM COM 10948W103 22,688 -8,691 581 0.0043
2021-10-29 2021-09-30 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 31,379 -636 -1.99 820 9.33 0.0069
2021-08-16 2021-06-30 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 32,015 32,015 750 0.0060
2021-05-13 2021-03-31 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 0 -10,110 -100.00 0 -100.00
2021-02-12 2020-12-31 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 10,110 75 0.75 195 51.16 0.0074
2020-10-30 2020-09-30 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 10,035 -386 -3.70 129 -0.77 0.0056
2020-08-10 2020-06-30 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 10,421 237 2.33 130 100.00 0.0060
2020-05-13 2020-03-31 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 10,184 -470 -4.41 65 -40.37 0.0016
2020-02-13 2019-12-31 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 10,654 259 2.49 109 5.83 0.0020
2019-11-13 2019-09-30 13F BRIGHTSPHERE INVESTMENT GROUP COM 10948W103 10,395 10,395 103 0.0022
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.