아카디안 자산 관리 주식회사
US ˙ NYSE ˙ US10948W1036

SecurityAAMI / Acadian Asset Management Inc.
InstitutionLido Advisors, LLC
Latest Disclosed Ownership11,904 shares
Latest Disclosed Value $ 647,847
Lido Advisors, LLC reports 33.42% increase in ownership of AAMI / Acadian Asset Management Inc.

On May 13, 2026 - Lido Advisors, LLC filed a 13F-HR form disclosing ownership of 11,904 shares of Acadian Asset Management Inc. (US:AAMI) valued at $647,816 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 8,922 shares of Acadian Asset Management Inc.. This represents a change in shares of 33.42% during the quarter. The current value of the position is $880,896 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)
2026-05-13 2026-03-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 11,904 2,982 33.42 648 51.52 0.0019
2026-02-10 2025-12-31 13F ACADIAN ASSET MANAGEMENT COM 10948W103 8,922 298 3.46 427 2.89 0.0013
2025-11-14 2025-09-30 13F ACADIAN ASSET MANAGEMENT COM 10948W103 8,624 976 12.76 415 54.28 0.0013
2025-08-13 2025-06-30 13F ACADIAN ASSET MANAGEMENT COM 10948W103 7,648 7,648 270 0.0010
2022-11-14 2022-09-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 0 -16,239 -100.00 0 -100.00
2022-08-15 2022-06-30 13F BRIGHTSPHERE INVT GROUP COM 10948W103 16,239 -59 -0.36 292 -26.08 0.0039
2022-05-17 2022-03-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 16,298 4,864 42.54 395 35.27 0.0044
2022-02-15 2021-12-31 13F BRIGHTSPHERE INVT GROUP COM 10948W103 11,434 11,434 292 0.0032
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.