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

CUSIP 03237H101 is the security identifier for AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock in Q4 2023?

177 institutional investors reported AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock for Q4 2023. Use the holders table for investor-level position and value details.

Amylyx Pharmaceuticals, Inc. - Common Stock (AMLX)

CUSIP: 03237H101

Q4 2023 13F Holders as of 31 Dec 2023

Type / Class: Equity / Common Stock
Shares outstanding: 109,540,561
Total 13F shares: 60,281,638
Share change: +1,460,857
Total reported value: $887,348,868
Put/Call ratio: 28%
Price per share: $14.72
Number of holders: 177
Value change: -$11,902,243
Number of buys: 109
Number of sells: 73

Quarterly Holders Quick Answers

What is CUSIP 03237H101?
CUSIP 03237H101 identifies AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock in SEC institutional holdings data.

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SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2024
Previous quarter: Q3 2023

Recent filing periods for CUSIP 03237H101:

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

Top shareholders of AMLX - Amylyx Pharmaceuticals, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
ALS Invest 1 B.V.	3/4/5	10%+ Owner	— class O/S missing	5,895,280	$96,258,721	—	06 Jul 2022	3/4/5
VANGUARD GROUP INC	13F	Company	4.6%	5,050,080	$92,466,964	—	30 Sep 2023	13F
Morningside Venture Investments Ltd	3/4/5	10%+ Owner	— class O/S missing	4,997,302	$81,596,447	—	15 Aug 2023	3/4/5
BlackRock Finance, Inc.	13F	Company	3.3%	3,575,459	$65,466,654	—	30 Sep 2023	13F
VIKING GLOBAL INVESTORS LP	13F 3/4/5	Company · 10%+ Owner	2.7%	2,962,555	$54,244,382	—	30 Sep 2023	13F 3/4/5
PERCEPTIVE ADVISORS LLC	13F	Company	2.5%	2,688,873	$49,233,265	—	30 Sep 2023	13F
Stonepine Capital Management, LLC	13F	Company	2.3%	2,515,868	$46,065,543	—	30 Sep 2023	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.9%	2,119,535	$38,808,686	—	30 Sep 2023	13F
Boxer Capital, LLC	13F	Company	1.9%	2,084,000	$38,158,040	—	30 Sep 2023	13F
DRAGSA 96 LLC	3/4/5	10%+ Owner	— class O/S missing	2,300,000	$37,554,630	—	11 Jan 2022	3/4/5
Avidity Partners Management LP	13F	Company	1.6%	1,756,940	$32,169,571	—	30 Sep 2023	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	1.6%	1,700,200	$31,130,662	—	30 Sep 2023	13F
Rock Springs Capital Management LP	13F	Company	1.4%	1,545,016	$28,289,243	—	30 Sep 2023	13F
Deep Track Capital, LP	13F	Company	1.1%	1,259,335	$23,058,424	—	30 Sep 2023	13F
STATE STREET CORP	13F	Company	1.1%	1,239,753	$22,699,877	—	30 Sep 2023	13F
CITADEL ADVISORS LLC	13F	Company	1.1%	1,226,944	$22,465,344	—	30 Sep 2023	13F
MARSHALL WACE, LLP	13F	Company	1.1%	1,197,760	$21,930,984	—	30 Sep 2023	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.1%	1,187,128	$21,736,313	—	30 Sep 2023	13F
SAMLYN CAPITAL, LLC	13F	Company	1.1%	1,164,897	$21,329,264	—	30 Sep 2023	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	1%	1,145,788	$20,979,378	—	30 Sep 2023	13F
EVENTIDE ASSET MANAGEMENT, LLC	13F	Company	1%	1,116,837	$20,449,285	—	30 Sep 2023	13F
Nuveen Asset Management, LLC	13F	Company	0.91%	1,000,351	$18,316,427	—	30 Sep 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.9%	982,068	$17,983,593	—	30 Sep 2023	13F
MORGAN STANLEY	13F	Company	0.87%	952,119	$17,433,297	—	30 Sep 2023	13F
Woodline Partners LP	13F	Company	0.82%	899,300	$16,466,183	—	30 Sep 2023	13F
Saturn V Capital Management LP	13F	Company	0.81%	886,143	$16,225,278	—	30 Sep 2023	13F
Alpha Wave Global, LP	13F	Company	0.78%	853,262	$15,623,227	—	30 Sep 2023	13F
EMERALD ADVISERS, LLC	13F	Company	0.77%	838,572	$15,354,253	—	30 Sep 2023	13F
D. E. Shaw & Co., Inc.	13F	Company	0.69%	760,290	$13,920,910	—	30 Sep 2023	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.64%	696,881	$12,759,892	—	30 Sep 2023	13F
Octagon Capital Advisors LP	13F	Company	0.63%	695,000	$12,725,450	—	30 Sep 2023	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	0.63%	688,438	$12,605,300	—	30 Sep 2023	13F
Hudson Bay Capital Management LP	13F	Company	0.62%	682,223	$12,491,503	—	30 Sep 2023	13F
EMERALD MUTUAL FUND ADVISERS TRUST	13F	Company	0.62%	681,310	$12,474,786	—	30 Sep 2023	13F
JUPITER ASSET MANAGEMENT LTD	13F	Company	0.59%	649,736	$11,896,666	—	30 Sep 2023	13F
FRANKLIN RESOURCES INC	13F	Company	0.56%	617,867	$11,313,145	—	30 Sep 2023	13F
JANE STREET GROUP, LLC	13F	Company	0.55%	601,288	$11,009,584	—	30 Sep 2023	13F
GMT CAPITAL CORP	13F	Company	0.53%	576,300	$10,552,053	—	30 Sep 2023	13F
ExodusPoint Capital Management, LP	13F	Company	0.52%	574,623	$10,521,000	—	30 Sep 2023	13F
Altium Capital Management LLC	13F	Company	0.49%	534,700	$9,790,357	—	30 Sep 2023	13F
FMR LLC	13F	Company	0.4%	438,686	$8,032,340	—	30 Sep 2023	13F
NORTHERN TRUST CORP	13F	Company	0.39%	425,778	$7,795,995	—	30 Sep 2023	13F
Nantahala Capital Management, LLC	13F	Company	0.37%	407,205	$7,455,924	—	30 Sep 2023	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.33%	365,862	$6,698,933	—	30 Sep 2023	13F
FEDERATED HERMES, INC.	13F	Company	0.3%	324,260	$5,937,201	—	30 Sep 2023	13F
PRIMECAP MANAGEMENT CO/CA/	13F	Company	0.28%	304,900	$5,582,719	—	30 Sep 2023	13F
INTERNATIONAL BIOTECHNOLOGY TRUST PLC	13F	Company	0.27%	295,000	$5,398,500	—	30 Sep 2023	13F
Tri Locum Partners LP	13F	Company	0.26%	282,862	$5,179,203	—	30 Sep 2023	13F
Margaret Olinger	3/4/5	Chief Commercial Officer	— mixed-class rows	320,685 mixed-class rows	$5,178,792	—	27 Dec 2023	3/4/5
Ally Bridge Group (NY) LLC	13F	Company	0.25%	272,690	$4,992,954	—	30 Sep 2023	13F

Institutional Holders of Amylyx Pharmaceuticals, Inc. - Common Stock (AMLX) as of Q4 2023

As of 31 Dec 2023, Amylyx Pharmaceuticals, Inc. - Common Stock (AMLX) was held by 177 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 60,281,638 shares. The largest 10 holders included VANGUARD GROUP INC, BlackRock Inc., VIKING GLOBAL INVESTORS LP, MORGAN STANLEY, Point72 Asset Management, L.P., Stonepine Capital Management, LLC, MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC, PERCEPTIVE ADVISORS LLC, and STATE STREET CORP. This page lists 177 institutional shareholders reporting positions in this security for the Q4 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2023 vs Q3 2023 Across Filers

Q3 2023 holders

168

Q4 2023 holders

177

Holder diff

Investor	Q3 2023 Shares	Q4 2023 Shares	Share Diff	Share Chg %	Q3 2023 Value $	Q4 2023 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.