<SEC-DOCUMENT>0000851205-19-000008-index.html : 20190524
<SEC-HEADER>0000851205-19-000008.hdr.sgml : 20190524
<ACCEPTANCE-DATETIME>20190524121115
ACCESSION NUMBER:		0000851205-19-000008
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20181231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20181231
</ITEM>
</RULE>
FILED AS OF DATE:		20190524
DATE AS OF CHANGE:		20190524

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COGNEX CORP
		CENTRAL INDEX KEY:			0000851205
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				042713778
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34218
		FILM NUMBER:		19852795

	BUSINESS ADDRESS:	
		STREET 1:		ONE VISION DR
		CITY:			NATICK
		STATE:			MA
		ZIP:			01760
		BUSINESS PHONE:		5086503000

	MAIL ADDRESS:	
		STREET 1:		ONE VISION DRIVE
		CITY:			NATICK
		STATE:			MA
		ZIP:			01760
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>formsd2018.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: formsd2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>a2018formsdexhibit101.htm
<DESCRIPTION>EXHIBIT 1.01
<TEXT>
Document 2 - file: a2018formsdexhibit101.htm

</DOCUMENT>
</SEC-DOCUMENT>