Amylyx Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (AMLX)

Q: What does CUSIP 03237H101 represent in this 13F holders report?

CUSIP 03237H101 is the security identifier for AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

Q: How many institutions held AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share in Q4 2022?

131 institutional investors reported AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share for Q4 2022. Use the holders table for investor-level position and value details.

CUSIP: 03237H101

Q4 2022 13F Holders as of 31 Dec 2022

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 48,572,530
Total 13F value: $1,794,757,212
Share change: +11,080,479
Put/Call ratio: 48%
SEC-reported price per share: $36.95
Number of holders: 131
Value change: +$422,522,242
Number of buys: 91
Number of sells: 35
Shares outstanding: 110,465,093

Security key

03237H101

Report period

Q4 2022

Institutions

131

Top holders

AMLX full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2023 Previous quarter: Q3 2022 Amylyx Pharmaceuticals, Inc. SEC filings Amylyx Pharmaceuticals, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 03237H101

Newer quarter: Q1 2023 Previous quarter: Q3 2022

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Ownership snapshot

Top reported holders of AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

VIKING GLOBAL INVESTORS LP

Disclosed value leader

VIKING GLOBAL INVESTORS LP

Comparable rows

15/15

Latest evidence

30 Sep 2022

13F 3/4/5 Lead comparable stake: 5.2% Showing 1-6 of 15 holder rows.

Quick read

VIKING GLOBAL INVESTORS LP leads the comparable SEC ownership view at 5.2%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens VIKING GLOBAL INVESTORS LP's linked filing trail.

Comparable ownership Top 5

VIKING GLOBAL INVESTORS LP 5.2%

PERCEPTIVE ADVISORS LLC 5%

VANGUARD GROUP INC 3.2%

BlackRock Finance, Inc. 2.1%

Boxer Capital, LLC 1.9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
VIKING GLOBAL INVESTORS LP	13F 3/4/5 Company · 10%+ Owner 13F 3/4/5	5.2%	$162,441,000 5,770,536 shares	—	30 Sep 2022
PERCEPTIVE ADVISORS LLC	13F Company 13F	5%	$154,038,000 5,472,033 shares	—	30 Sep 2022
VANGUARD GROUP INC	13F Company 13F	3.2%	$98,929,000 3,514,356 shares	—	30 Sep 2022
BlackRock Finance, Inc.	13F Company 13F	2.1%	$64,628,000 2,295,834 shares	—	30 Sep 2022
Boxer Capital, LLC	13F Company 13F	1.9%	$58,665,000 2,084,000 shares	—	30 Sep 2022
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F Company 13F	1.2%	$38,003,000 1,350,000 shares	—	30 Sep 2022

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2022

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

131

48,572,530

Rows available

131

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2022 vs Q3 2022 Across Filers

Q3 2022 holders

Q4 2022 holders

131

Holder diff

Investor	Q3 2022 Shares	Q4 2022 Shares	Share Diff	Share Chg %	Q3 2022 value	Q4 2022 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend