Company · Ownership research

Amylyx Pharmaceuticals, Inc. AMLX

CIK 0001658551 · CUSIP 03237H101

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 03237H101 (AMLX), not CUSIP 03237H901 (AMLX), CUSIP 03237H951 (AMLX), and does not merge CUSIPs.

This page lists the top 20 of 120 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$8.03M 4,223,968 shares	0.00%	-1.12M(-21.00%)Reduced	SEC filing ↗ Aug 13, 2024	▾
02	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$6.35M 3,340,943 shares	0.01%	+3.22M(+2,768.00%)Added	SEC filing ↗ Aug 14, 2024	▾
03	BlackRock Inc. CIK 1364742 · View history	$5.07M 2,669,741 shares	0.00%	-1.80M(-40.30%)Reduced	SEC filing ↗ Aug 13, 2024	▾
04	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$4.96M 2,610,420 shares	0.00%	-332.77K(-11.30%)Reduced	SEC filing ↗ Aug 13, 2024	▾
05	Almitas Capital LLC CIK 1596468 · View history	$3.62M 1,903,851 shares	1.50%	+1.90MNew	SEC filing ↗ Aug 15, 2024	▾
06	Alyeska Investment Group, L.P. CIK 1453072 · View history	$3.46M 1,823,420 shares	0.02%	+814.81K(+80.80%)Added	SEC filing ↗ Aug 14, 2024	▾
07	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$2.92M 1,535,178 shares	0.00%	-936.28K(-37.90%)Reduced	SEC filing ↗ Aug 14, 2024	▾
08	683 Capital Management, LLC CIK 1404574 · View history	$2.85M 1,501,871 shares	0.30%	+1.50MNew	SEC filing ↗ Aug 14, 2024	▾
09	BOXER CAPITAL, LLC CIK 1465837 · View history	$2.85M 1,500,000 shares	0.15%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
10	CITADEL ADVISORS LLC CIK 1423053 · View history	$2.56M 1,344,818 shares	0.00%	+14.43K(+1.10%)Added	SEC filing ↗ Aug 14, 2024	▾
11	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$2.49M 1,308,181 shares	0.00%	+265.60K(+25.50%)Added	SEC filing ↗ Aug 14, 2024	▾
12	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$2.47M 1,297,838 shares	0.01%	-135.03K(-9.40%)Reduced	SEC filing ↗ Aug 14, 2024	▾
13	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$2.30M 1,211,617 shares	0.01%	+1.21MNew	SEC filing ↗ Aug 6, 2024	▾
14	TWO SIGMA ADVISERS, LP CIK 1478735 · View history	$2.19M 1,154,200 shares	0.00%	+355.30K(+44.50%)Added	SEC filing ↗ Aug 14, 2024	▾
15	FARALLON CAPITAL MANAGEMENT LLC CIK 909661 · Amended · View history	$2.19M 1,150,221 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
16	MORGAN STANLEY CIK 895421 · Amended · View history	$1.76M 924,459 shares	0.00%	-1.15M(-55.40%)Reduced	SEC filing ↗ May 14, 2025	▾
17	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$1.54M 811,488 shares	0.00%	+106.89K(+15.20%)Added	SEC filing ↗ Aug 9, 2024	▾
18	Qube Research & Technologies Ltd CIK 1729829 · View history	$1.50M 789,127 shares	0.00%	-154.94K(-16.40%)Reduced	SEC filing ↗ Aug 14, 2024	▾
19	CITIGROUP INC CIK 831001 · View history	$1.26M 663,376 shares	0.00%	-251.35K(-27.50%)Reduced	SEC filing ↗ Aug 12, 2024	▾
20	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$1.18M 621,927 shares	0.00%	+95.24K(+18.10%)Added	SEC filing ↗ Aug 9, 2024	▾

Showing 20 / 120 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

120

Cancelled or null records excluded

Disclosed shares

43,634,995

Not deduplicated across managers

Disclosed value

$82.91M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Amylyx Pharmaceuticals, Inc. · Q2 2024

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.