[SCHEDULE 13G/A] Acadian Asset Management Inc. SEC Filing

Rhea-AI Filing Summary

Jennison Associates LLC filed Amendment No. 1 to a Schedule 13G reporting beneficial ownership of 1,729,842 shares of ACADIAN ASSET MANAGEMENT INC common stock, representing 4.8% of the class (CUSIP 10948W103). The date of event triggering this filing is 09/30/2025.

Jennison reports sole voting power over 1,729,842 shares and shared dispositive power over 1,729,842 shares, with no shared voting power and no sole dispositive power. The filer is classified as an investment adviser and certifies the shares were acquired and are held in the ordinary course of business and not to change or influence control of the issuer.

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

(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:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 10948W103

1

Names of Reporting Persons

Jennison Associates LLC

2

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

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,729,842.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,729,842.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,729,842.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.8 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ACADIAN ASSET MANAGEMENT INC
(b)	Address of issuer's principal executive offices: 200 Clarendon Street, 53rd Floor, Boston, MA 02116
Item 2.
(a)	Name of person filing: Jennison Associates LLC
(b)	Address or principal business office or, if none, residence: 55 East 52nd Street, New York, NY 10055
(c)	Citizenship: USA
(d)	Title of class of securities: Common Stock
(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)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	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)	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)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1729842
(b)	Percent of class: 4.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1729842
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1729842
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.

Jennison Associates LLC

Signature:	Beata Markowicz
Name/Title:	Senior Vice President, Compliance
Date:	11/05/2025

FAQ

What did AAMI’s Schedule 13G/A disclose?

Jennison Associates LLC reported beneficial ownership of 1,729,842 AAMI common shares, equal to 4.8% of the class.

Who is the reporting person in AAMI’s Schedule 13G/A?

The reporting person is Jennison Associates LLC, classified as an investment adviser.

What voting and dispositive powers were reported for AAMI?

Jennison reports sole voting power: 1,729,842; shared voting power: 0; sole dispositive power: 0; shared dispositive power: 1,729,842.

What percentage of AAMI’s common stock is owned?

The filing states 4.8% of the class is beneficially owned.

What is the date of event for this ownership report?

The date of event is 09/30/2025.

What certification did the filer make?

Jennison certified the securities were acquired and held in the ordinary course of business and not to change or influence control.

What security and CUSIP were identified for AAMI?

The filing covers Common Stock of ACADIAN ASSET MANAGEMENT INC, CUSIP 10948W103.