<SEC-DOCUMENT>0000748054-19-000021-index.html : 20191113
<SEC-HEADER>0000748054-19-000021.hdr.sgml : 20191113
<ACCEPTANCE-DATETIME>20191113125135
ACCESSION NUMBER:		0000748054-19-000021
CONFORMED SUBMISSION TYPE:	13F-NT
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190930
FILED AS OF DATE:		20191113
DATE AS OF CHANGE:		20191113
EFFECTIVENESS DATE:		20191113

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERICAN CENTURY INVESTMENT MANAGEMENT INC
		CENTRAL INDEX KEY:			0000052388
		IRS NUMBER:				440640487
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-NT
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-01091
		FILM NUMBER:		191212818

	BUSINESS ADDRESS:	
		STREET 1:		4500 MAIN STREET
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64111
		BUSINESS PHONE:		816-531-5575

	MAIL ADDRESS:	
		STREET 1:		4500 MAIN STREET
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64111

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INVESTORS RESEARCH CORP
		DATE OF NAME CHANGE:	19920929
</SEC-HEADER>
<DOCUMENT>
<TYPE>13F-NT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
</SEC-DOCUMENT>