<SEC-DOCUMENT>0000796370-26-000002.txt : 20260105
<SEC-HEADER>0000796370-26-000002.hdr.sgml : 20260105
<ACCEPTANCE-DATETIME>20260105113837
ACCESSION NUMBER:		0000796370-26-000002
CONFORMED SUBMISSION TYPE:	13F-NT
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251231
FILED AS OF DATE:		20260105
DATE AS OF CHANGE:		20260105
EFFECTIVENESS DATE:		20260105

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Acadian Inc
		CENTRAL INDEX KEY:			0000796370
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		ORGANIZATION NAME:           	02 Finance
		EIN:				042714625
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-NT
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-11931
		FILM NUMBER:		26504558

	BUSINESS ADDRESS:	
		STREET 1:		200 STATE ST., SUITE 601A
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		(617) 369-7300

	MAIL ADDRESS:	
		STREET 1:		200 STATE ST., SUITE 601A
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BrightSphere Inc.
		DATE OF NAME CHANGE:	20180329

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OMAM INC.
		DATE OF NAME CHANGE:	20150106

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OLD MUTUAL (US) HOLDINGS INC.
		DATE OF NAME CHANGE:	20060419
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-NT
<SEQUENCE>1
<FILENAME>primary_doc.xml
</DOCUMENT>
</SUBMISSION>