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 Q2 2023?

153 institutional investors reported AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share for Q2 2023. Use the holders table for investor-level position and value details.

CUSIP: 03237H101

Q2 2023 13F Holders as of 30 Jun 2023

Security type / class: Equity / Common Stock, $0.0001 par value per share
Total 13F shares: 54,545,075
Total 13F value: $1,176,653,052
Share change: +3,184,647
Put/Call ratio: 32%
SEC-reported price per share: $21.57
Number of holders: 153
Value change: +$56,163,167
Number of buys: 95
Number of sells: 63
Shares outstanding: 110,465,093

Security key

03237H101

Report period

Q2 2023

Institutions

153

Top holders

AMLX full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2023 Previous quarter: Q1 2023 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: Q3 2023 Previous quarter: Q1 2023

Recent filing periods:

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

PERCEPTIVE ADVISORS LLC

Disclosed value leader

PERCEPTIVE ADVISORS LLC

Comparable rows

15/15

Latest evidence

31 Mar 2023

13F 3/4/5 Lead comparable stake: 5.5% Showing 1-6 of 15 holder rows.

Quick read

PERCEPTIVE ADVISORS LLC leads the comparable SEC ownership view at 5.5%.

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 PERCEPTIVE ADVISORS LLC's linked filing trail.

Comparable ownership Top 5

PERCEPTIVE ADVISORS LLC 5.5%

VANGUARD GROUP INC 4.3%

BlackRock Finance, Inc. 3.3%

VIKING GLOBAL INVESTORS LP 2.7%

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
PERCEPTIVE ADVISORS LLC	13F Company 13F	5.5%	$177,056,455 6,034,644 shares	—	31 Mar 2023
VANGUARD GROUP INC	13F Company 13F	4.3%	$139,286,986 4,747,341 shares	—	31 Mar 2023
BlackRock Finance, Inc.	13F Company 13F	3.3%	$106,061,695 3,614,918 shares	—	31 Mar 2023
VIKING GLOBAL INVESTORS LP	13F 3/4/5 Company · 10%+ Owner 13F 3/4/5	2.7%	$86,921,364 2,962,555 shares	—	31 Mar 2023
Boxer Capital, LLC	13F Company 13F	1.9%	$61,145,000 2,084,000 shares	—	31 Mar 2023
D. E. Shaw & Co., Inc.	13F Company 13F	1.8%	$59,336,336 2,022,370 shares	—	31 Mar 2023

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 Q2 2023

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

Institutions

153

54,545,075

Rows available

153

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 Q2 2023 vs Q1 2023 Across Filers

Q1 2023 holders

145

Q2 2023 holders

153

Holder diff

Investor	Q1 2023 Shares	Q2 2023 Shares	Share Diff	Share Chg %	Q1 2023 value	Q2 2023 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend