-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 PBKHr1gw2NeI9ErxpYZb8zEHkchBNv3t73fp1L6PbBJV+fXEplklARjyMYulRG36
 FenRTDqTHXki5s9m08fsMQ==

<SEC-DOCUMENT>0001256071-08-000014.txt : 20080213
<SEC-HEADER>0001256071-08-000014.hdr.sgml : 20080213
<ACCEPTANCE-DATETIME>20080213170003
ACCESSION NUMBER:		0001256071-08-000014
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20080213
DATE AS OF CHANGE:		20080213

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CEPHEID
		CENTRAL INDEX KEY:			0001037760
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		IRS NUMBER:				770441625
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-60897
		FILM NUMBER:		08605878

	BUSINESS ADDRESS:	
		STREET 1:		1190 BORREGAS AVE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089
		BUSINESS PHONE:		4085414191

	MAIL ADDRESS:	
		STREET 1:		1190 BORREGAS
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLATINUM INVESTMENT MANAGEMENT LTD
		CENTRAL INDEX KEY:			0001256071
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		C/O PLATINUM INVESTMENT MANAGEMENT
		STREET 2:		LEVEL 8, 7 MACQUARIE PLACE
		CITY:			SYDNEY AUSTRALIA 2000
		STATE:			C3
		ZIP:			00000
		BUSINESS PHONE:		61292557533

	MAIL ADDRESS:	
		STREET 1:		C/O PLATINUM INVESTMENT MANAGEMENT
		STREET 2:		LEVEL 8, 7 MACQUARIE PLACE
		CITY:			SYDNEY AUSTRALIA 2000
		STATE:			C3
		ZIP:			00000

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PLATINUM ASSET MANAGEMENT LTD
		DATE OF NAME CHANGE:	20030722
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>cepheid31.txt
<TEXT>
Item 1.

(a)  Cepheid

(b) 	904 Caribbean Drive
      Sunnyvale, California 94089-1189

Item 2.

(a) Platinum Investment Management Limited

(b)  Level 8, 7 Macquarie Place
Sydney NSW 2000
Australia
(c) Australia
(d) Common Stock
(e) 15670R107

Item 3.
N/A

Item 4.

(a) 20,783
(b) 0.0%
(c) (i) 20,783
(ii) 0
(iii) 20,783
(iv) 0

Item 5
No

Item 6
No

Item 7
N/A

Item 8
N/A

Item 9
N/A



Item 10
(a) N/A
(b) By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not
held for the purpose of or with the effect of changing or influencing
the control of the issuer of the securities and were not acquired and
are not held in connection with or as a participant in any transaction
having that purpose or effect.



After reasonable inquiry and to the best of my
Knowledge and belief, I certify that the information
set forth in this statement is true, complete and correct.




</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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