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Companies / Health Care / Amylyx Pharmaceuticals, Inc.
AMLX

Amylyx Pharmaceuticals, Inc.

Health CarePharmaceutical Preparations
Ticker AMLXCAMBRIDGE, MAFiscal year ends DecemberBook value per share $6.64Diluted shares 113.6M

Amylyx Pharmaceuticals, Inc. (Nasdaq: AMLX) is a clinical-stage pharmaceutical company developing investigational therapies for endocrine conditions and neurodegenerative diseases, including conditions with high unmet medical needs. Its pipeline includes avexitide, a GLP-1 receptor antagonist being studied for… From the company’s description.

In fiscal 2025, Amylyx Pharmaceuticals, Inc. reported a net loss of $144.74M. Operations used $123.34M in cash.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-09-30
Sales & profitability
$0.00MFY2025
−100.0% year over year
0.00%FY2025
$-144.74MFY2025
+52.0% year over year
Last 12 mo $-163.19M
-47.41%FY2025
+49.7 percentage points
Last 12 mo -21.65%
Cash & financing
$-123.34MFY2025
+26.4% year over year
Last 12 mo $-129.88M
$-123.48MFY2025
+26.4% year over year
Last 12 mo $-130.02M
—
94.6MFY2025
+38.8% year over year
Last 12 mo 113.6M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Amylyx Pharmaceuticals, Inc. does

In the company’s own words

Amylyx Pharmaceuticals, Inc. (Nasdaq: AMLX) is a clinical-stage pharmaceutical company developing investigational therapies for endocrine conditions and neurodegenerative diseases, including conditions with high unmet medical needs. Its pipeline includes avexitide, a GLP-1 receptor antagonist being studied for post-bariatric hypoglycemia (PBH); AMX0035, an oral combination of sodium phenylbutyrate and taurursodiol under investigation for Wolfram syndrome; AMX0114, an antisense oligonucleotide targeting calpain-2 in amyotrophic lateral sclerosis; and AMX0318, a long-acting GLP-1 receptor antagonist candidate for PBH and other rare diseases. Avexitide is in a Phase 3 PBH trial, AMX0035 has been evaluated in a Phase 2 Wolfram syndrome trial, and AMX0114 is in Phase 1 testing. Amylyx also engages in research collaborations and works with external institutions on clinical research. The company relies on contract manufacturers to produce its candidates for clinical development. It has no reportable business segments described here. Its website is www.amylyx.com.

Company details
Sector
Health Care
Industry (SIC)
Pharmaceutical Preparations
Headquarters
CAMBRIDGE, MA
Fiscal year end
December
CIK
1658551
SIC
2834

Financial performance, year by year

Fiscal 2022–2025 · USD
$-370.00M$-165.24M$39.52M$244.28M$449.04M2022202320242025Last 12 moLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Amylyx Pharmaceuticals, Inc. — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

190
funds hold it
0 of 35
superinvestors hold it
$606.95M
held by funds, at market
28.8%
of shares held by funds

Largest fund holders · Amylyx Pharmaceuticals, Inc.’s weight in each

VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.00%of fund net assets
iShares Russell 2000 ETF
IWM · iShares Trust
0.05%of fund net assets
Fidelity Advisor Biotechnology Fund
FBTAX · Fidelity Advisor Series VII
—of fund net assets
Fidelity Small Cap Growth Fund
FCPGX · Fidelity Securities Fund
—of fund net assets
Eventide Healthcare & Life Sciences Fund
ETAHX · MUTUAL FUND SERIES TRUST
1.33%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Could not be determined for this company: bond issues.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

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