Jennison reports 5.4% stake in Acadian Asset Management (AAMI)

Rhea-AI Filing Summary

Jennison Associates LLC has reported beneficial ownership of 1,909,222 shares of Acadian Asset Management Inc common stock, representing 5.4% of the class as of 12/31/2025. Jennison has sole power to vote these shares but shares dispositive power over the same amount.

The firm states the position was acquired and is held in the ordinary course of business, and not for the purpose of changing or influencing control of Acadian Asset Management Inc. The filing is signed by a Senior Vice President, Compliance, on behalf of Jennison Associates LLC.

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Accepted by SEC EDGAR 01/30/2026 - 04:21 PM Learn about SEC filing dates

FAQ

What percentage of Acadian Asset Management Inc (AAMI) does Jennison Associates own?

Jennison Associates LLC beneficially owns 5.4% of the outstanding common stock of Acadian Asset Management Inc. This level of ownership requires a Schedule 13G filing to disclose its position.

How many AAMI shares does Jennison Associates report owning?

Jennison Associates LLC reports beneficial ownership of 1,909,222 shares of Acadian Asset Management Inc common stock. This share count underlies the reported 5.4% ownership stake in the company.

What voting and dispositive powers does Jennison have over its AAMI shares?

Jennison Associates LLC reports sole voting power over 1,909,222 shares and shared dispositive power over 1,909,222 shares. It reports no shared voting power and no sole dispositive power for these shares.

Why did Jennison Associates file a Schedule 13G for AAMI?

Jennison Associates LLC filed a Schedule 13G because it exceeded 5% beneficial ownership in Acadian Asset Management Inc. The firm states the shares were acquired in the ordinary course of business, not to influence control.

Does Jennison Associates seek to influence control of Acadian Asset Management Inc?

Jennison Associates LLC certifies that the AAMI securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

What type of reporting person is Jennison Associates in this AAMI filing?

Jennison Associates LLC identifies itself as an investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E). It is a Delaware limited liability company with its principal office in New York.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

ACADIAN ASSET MANAGEMENT INC

(Name of Issuer)

Common Stock

(Title of Class of Securities)

10948W103

(CUSIP Number)

12/31/2025

(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 1,909,222.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,909,222.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,909,222.00

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)

5.4 %

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 State Street, Suite 601A, Boston, MA 02109
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: 1909222
(b)	Percent of class: 5.4 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1909222
	(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: 1909222
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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:	01/30/2026