<SEC-DOCUMENT>0001140361-23-006816-index.html : 20230214
<SEC-HEADER>0001140361-23-006816.hdr.sgml : 20230214
<ACCEPTANCE-DATETIME>20230214131847
ACCESSION NUMBER:		0001140361-23-006816
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230214
DATE AS OF CHANGE:		20230214
GROUP MEMBERS:		DAVID C. OTT
GROUP MEMBERS:		DRAGSA 96 LLC
GROUP MEMBERS:		O. ANDREAS HALVORSEN
GROUP MEMBERS:		ROSE S. SHABET
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES GP LLC
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES PARENT GP LLC
GROUP MEMBERS:		VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Amylyx Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001658551
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				464600503
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-93265
		FILM NUMBER:		23626290

	BUSINESS ADDRESS:	
		STREET 1:		43 THORNDIKE STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02141
		BUSINESS PHONE:		617-683-0917

	MAIL ADDRESS:	
		STREET 1:		43 THORNDIKE STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02141

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VIKING GLOBAL INVESTORS LP
		CENTRAL INDEX KEY:			0001103804
		IRS NUMBER:				134055118
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		55 RAILROAD AVENUE
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		212-672-7050

	MAIL ADDRESS:	
		STREET 1:		55 RAILROAD AVENUE
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>brhc10047886_sc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: brhc10047886_sc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>