<SEC-DOCUMENT>0001193125-17-029855-index.html : 20170203
<SEC-HEADER>0001193125-17-029855.hdr.sgml : 20170203
<ACCEPTANCE-DATETIME>20170203075502
ACCESSION NUMBER:		0001193125-17-029855
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170203
DATE AS OF CHANGE:		20170203

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASPEN TECHNOLOGY INC /DE/
		CENTRAL INDEX KEY:			0000929940
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				042739697
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-44607
		FILM NUMBER:		17570231

	BUSINESS ADDRESS:	
		STREET 1:		20 CROSBY DRIVE
		CITY:			BEDFORD
		STATE:			MA
		ZIP:			01730
		BUSINESS PHONE:		781-221-4302

	MAIL ADDRESS:	
		STREET 1:		20 CROSBY DRIVE
		CITY:			BEDFORD
		STATE:			MA
		ZIP:			01730

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Artisan Partners Limited Partnership
		CENTRAL INDEX KEY:			0001466153
		IRS NUMBER:				300551775
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		875 E WISCONSIN AVE
		STREET 2:		STE 800
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		(414) 390-6100

	MAIL ADDRESS:	
		STREET 1:		875 E WISCONSIN AVE
		STREET 2:		STE 800
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d327149dsc13ga.txt
<DESCRIPTION>ASPEN TECHNOLOGY, INC.
<TEXT>
Document 1 - file: d327149dsc13ga.txt

</DOCUMENT>
</SEC-DOCUMENT>