Acadian Asset Management Inc.
US ˙ NYSE ˙ US10948W1036

SecurityAAMI / Acadian Asset Management Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership55,444 shares
Latest Disclosed Value $ 2,605,868
Barclays Plc reports 3.50% decrease in ownership of AAMI / Acadian Asset Management Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 55,444 shares of Acadian Asset Management Inc. (US:AAMI) valued at $2,605,868 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 57,452 shares of Acadian Asset Management Inc.. This represents a change in shares of -3.50% during the quarter. The current value of the position is $4,006,383 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)
2026-02-13 2025-12-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 55,444 -2,008 -3.50 2,606 -5.82 0.0006
2026-03-31 2025-09-30 13F/A-3 ACADIAN ASSET MANAGEMENT COM 10948W103 57,452 -11,590 -16.79 2,767 13.69 0.0006
2026-03-19 2025-09-30 13F/A-2 BRIGHTSPHERE INVT GROUP COM 10948W103 66,754 -2,288 1,696 0.0004
2025-11-12 2025-09-30 13F ACADIAN ASSET MANAGEMENT COM 10948W103 57,452 -11,590 2,767 0.0006
2026-02-27 2025-06-30 13F/A-2 ACADIAN ASSET MANAGEMENT COM 10948W103 69,042 13,171 23.57 2,433 68.49 0.0006
2025-08-14 2025-06-30 13F/A-1 ACADIAN ASSET MANAGEMENT COM 10948W103 69,042 13,171 2 0.0006
2025-08-13 2025-06-30 13F ACADIAN ASSET MANAGEMENT COM 10948W103 69,042 13,171 2 0.0002
2026-03-17 2025-03-31 13F/A-1 ACADIAN ASSET MANAGEMENT COM 10948W103 55,871 -7,073 -11.24 1,445 -12.85 0.0004
2025-05-15 2025-03-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 55,871 -7,073 1 0.0004
2026-03-19 2024-12-31 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 62,944 -3,810 -5.71 1,658 -2.24 0.0005
2025-02-13 2024-12-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 62,944 -3,810 2 0.0005
2026-03-31 2024-09-30 13F/A-2 BRIGHTSPHERE INVT GROUP COM 10948W103 66,754 42,989 180.89 1,696 222.24 0.0004
2024-11-19 2024-09-30 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 66,754 42,989 2 0.0004
2024-11-15 2024-09-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 66,754 42,989 2 0.0001
2026-03-23 2024-06-30 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 23,765 -68,648 -74.28 527 -75.07 0.0002
2024-08-14 2024-06-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 23,765 -68,648 1 0.0002
2026-03-24 2024-03-31 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 92,413 20,271 28.10 2,111 52.68 0.0007
2024-05-15 2024-03-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 92,413 20,271 2 0.0007
2026-03-25 2023-12-31 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 72,142 42,365 142.27 1,382 139.51 0.0005
2024-02-15 2023-12-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 72,142 42,365 1 0.0005
2026-03-26 2023-09-30 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 29,777 8,442 39.57 577 29.37 0.0004
2023-11-07 2023-09-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 29,777 8,442 1 0.0004
2026-03-30 2023-06-30 13F/A-2 BRIGHTSPHERE INVT GROUP COM 10948W103 21,335 2,446 12.95 447 0.22 0.0003
2023-09-20 2023-06-30 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 21,335 2,446 0 0.0003
2023-08-03 2023-06-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 21,335 2,446 0 0.0003
2026-03-30 2023-03-31 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 18,889 -2,445 -11.46 445 1.37 0.0002
2023-05-04 2023-03-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 18,889 -2,445 0 0.0002
2026-03-30 2022-12-31 13F/A-1 BRIGHTSPHERE INVT GROUP COM 10948W103 21,334 7,410 53.22 439 112.08 0.0002
2023-02-13 2022-12-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 21,334 7,410 0 0.0002
2022-11-03 2022-09-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 13,924 -2,611 -15.79 207 -30.54 0.0002
2022-08-12 2022-06-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 16,535 -16,253 -49.57 298 -62.47 0.0002
2022-05-16 2022-03-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 32,788 32,788 794 0.0006
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.