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    Amendment: SEC Form SCHEDULE 13G/A filed by Acadian Asset Management Inc.

    11/14/25 4:00:18 PM ET
    $AAMI
    Investment Managers
    Finance
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    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549


    SCHEDULE 13G


    UNDER THE SECURITIES EXCHANGE ACT OF 1934
    (Amendment No. 1)


    Acadian Asset Management Inc.

    (Name of Issuer)


    Common stock, par value $0.001 per share

    (Title of Class of Securities)


    10948W103

    (CUSIP Number)


    09/30/2025

    (Date of Event Which Requires Filing of this Statement)


    Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
    Checkbox checked   Rule 13d-1(b)
    Checkbox not checked   Rule 13d-1(c)
    Checkbox not checked   Rule 13d-1(d)






    SCHEDULE 13G

    CUSIP No.
    10948W103


    1Names of Reporting Persons

    Empyrean Capital Partners, LP
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox not checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    DELAWARE
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    1,541,108.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    1,541,108.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,541,108.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    4.3 %
    12Type of Reporting Person (See Instructions)

    IA, PN

    Comment for Type of Reporting Person:  Original filing was under BrightSphere Investment Group. On January 2, 2025, the name was changed to Acadian Asset Management.


    SCHEDULE 13G

    CUSIP No.
    10948W103


    1Names of Reporting Persons

    Meron Amos
    2Check the appropriate box if a member of a Group (see instructions)

    Checkbox not checked  (a)
    Checkbox not checked  (b)
    3Sec Use Only
    4Citizenship or Place of Organization

    UNITED STATES
    Number of Shares Beneficially Owned by Each Reporting Person With:
    5Sole Voting Power

    0.00
    6Shared Voting Power

    1,541,108.00
    7Sole Dispositive Power

    0.00
    8Shared Dispositive Power

    1,541,108.00
    9Aggregate Amount Beneficially Owned by Each Reporting Person

    1,541,108.00
    10Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

    Checkbox not checked
    11Percent of class represented by amount in row (9)

    4.3 %
    12Type of Reporting Person (See Instructions)

    HC, IN

    Comment for Type of Reporting Person:  Original filing was under BrightSphere Investment Group. On January 2, 2025, the name was changed to Acadian Asset Management.


    SCHEDULE 13G

    Item 1. 
    (a)Name of issuer:

    Acadian Asset Management Inc.
    (b)Address of issuer's principal executive offices:

    200 State Street, Suite 601A, Boston, Massachusetts, 02109
    Item 2. 
    (a)Name of person filing:

    This statement is filed by: (i) Empyrean Capital Partners, LP ("ECP"), a Delaware limited partnership, which serves as investment manager to Empyrean Capital Overseas Master Fund, Ltd. ("ECOMF"), a Cayman Islands exempted company, with respect to the shares of common stock, par value $0.001 per share (the "Common stock") of Acadian Asset Management (the "Company") directly held by ECOMF; (ii) Mr. Amos Meron, who serves as the managing member of Empyrean Capital, LLC, the general partner of ECP, with respect to the shares of Common stock directly held by ECOMF. The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of shares of Common stock owned by another Reporting Person.
    (b)Address or principal business office or, if none, residence:

    The address of the business office of each of the Reporting Persons is c/o Empyrean Capital Partners, L.P., 10250 Constellation Boulevard, Suite 2950, Los Angeles, CA 90067
    (c)Citizenship:

    ECP - a Delaware limited partnership Amos Meron - United States
    (d)Title of class of securities:

    Common stock, par value $0.001 per share
    (e)CUSIP No.:

    10948W103
    Item 3.If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
    (a)Checkbox not checked   Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
    (b)Checkbox not checked   Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
    (c)Checkbox not checked   Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
    (d)Checkbox not checked   Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
    (e)Checkbox checked   An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
    (f)Checkbox not checked   An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
    (g)Checkbox checked   A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
    (h)Checkbox not checked   A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
    (i)Checkbox not checked   A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
    (j)Checkbox not checked   A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
           please specify the type of institution:
    (k)Checkbox not checked   Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
     
    Item 4.Ownership
    (a)Amount beneficially owned:

    1,541,108
    (b)Percent of class:

    4.3%
    (c)Number of shares as to which the person has:
     (i) Sole power to vote or to direct the vote:

    0

     (ii) Shared power to vote or to direct the vote:

    1,541,108

     (iii) Sole power to dispose or to direct the disposition of:

    0

     (iv) Shared power to dispose or to direct the disposition of:

    1,541,108 The percentages used in this Schedule 13G are calculated based upon 35,811,913 shares of Common Stock outstanding as of August 5, 2025, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2025, filed with the Securities and Exchange Commission on August 7, 2025.

    Item 5.Ownership of 5 Percent or Less of a Class.
     
    Checkbox checked    Ownership of 5 percent or less of a class
    Item 6.Ownership of more than 5 Percent on Behalf of Another Person.
     
    Not Applicable
    Item 7.Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
     
    Not Applicable
    Item 8.Identification and Classification of Members of the Group.
     
    Not Applicable
    Item 9.Notice of Dissolution of Group.
     
    Not Applicable

    Item 10.Certifications:
     
    By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

        SIGNATURE 
     
    After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

     
    Empyrean Capital Partners, LP
     
    Signature:/s/ Jennifer Norman
    Name/Title:Chief Compliance Officer
    Date:11/14/2025
     
    Meron Amos
     
    Signature:/s/ Amos Meron
    Name/Title:Amos Meron
    Date:11/14/2025
    Exhibit Information

    Exhibit 99.1 Joint Filing Agreement

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