<SEC-DOCUMENT>0001393825-19-000078-index.html : 20190204
<SEC-HEADER>0001393825-19-000078.hdr.sgml : 20190204
<ACCEPTANCE-DATETIME>20190204161944
ACCESSION NUMBER:		0001393825-19-000078
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20190204
DATE AS OF CHANGE:		20190204

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MoSys, Inc.
		CENTRAL INDEX KEY:			0000890394
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				770291941
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-78033
		FILM NUMBER:		19563953

	BUSINESS ADDRESS:	
		STREET 1:		2309 BERING DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131
		BUSINESS PHONE:		408 418 7500

	MAIL ADDRESS:	
		STREET 1:		2309 BERING DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONOLITHIC SYSTEM TECHNOLOGY INC
		DATE OF NAME CHANGE:	19960613

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hudson Bay Capital Management LP
		CENTRAL INDEX KEY:			0001393825
		IRS NUMBER:				371511173
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		777 THIRD AVE., 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212-571-1244

	MAIL ADDRESS:	
		STREET 1:		777 THIRD AVE., 30TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Hudson Bay Capital Management, L.P.
		DATE OF NAME CHANGE:	20070320
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>mosy_13g.htm
<DESCRIPTION>MOSY 13G
<TEXT>
Document 1 - file: mosy_13g.htm

</DOCUMENT>
</SEC-DOCUMENT>