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Companies / Health Care / Alnylam Pharmaceuticals, Inc.
ALNY

Alnylam Pharmaceuticals, Inc.

Health CarePharmaceutical Preparations
Ticker ALNYCAMBRIDGE, MAFiscal year ends DecemberBook value per share $9.79Diluted shares 138.2M

Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY) is a global commercial-stage biopharmaceutical company developing medicines based on RNA interference (RNAi), a biological process used to silence gene expression. Its RNAi therapeutics target messenger RNA to reduce production of proteins implicated in disease. Alnylam… From the company’s description.

In fiscal 2025, Alnylam Pharmaceuticals, Inc. reported revenue of $3.71B, up 65.2% from fiscal 2024, and net income of $313.75M. Its operating margin was 13.5%, and operations generated $524.08M in cash. Over the twelve months to Jun 30, 2026, revenue was $4.80B.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$3.71BFY2025
+65.2% year over year
Last 12 mo $4.80B
13.51%FY2025
+21.4 percentage points
Last 12 mo 20.81%
$313.75MFY2025
+212.8% year over year
Last 12 mo $807.99M
39.76%FY2025
+454.4 percentage points
Last 12 mo 59.67%
Cash & financing
$524.08MFY2025
+6405.1% year over year
Last 12 mo $885.89M
$465.38MFY2025
+1192.7% year over year
Last 12 mo $793.95M
1.28FY2025
Was 15.27× a year earlier
Last 12 mo 0.75
134.7MFY2025
+5.5% year over year
Last 12 mo 138.2M

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 Alnylam Pharmaceuticals, Inc. does

In the company’s own words

Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY) is a global commercial-stage biopharmaceutical company developing medicines based on RNA interference (RNAi), a biological process used to silence gene expression. Its RNAi therapeutics target messenger RNA to reduce production of proteins implicated in disease. Alnylam sells four products directly: AMVUTTRA and ONPATTRO for transthyretin amyloidosis, GIVLAARI for acute hepatic porphyria, and OXLUMO for primary hyperoxaluria type 1. Its collaborators commercialize Leqvio for high cholesterol and Qfitlia for hemophilia. The company’s research and development programs span rare and prevalent diseases, including investigational treatments for hypertension, Alzheimer’s disease and complement-mediated conditions. Its delivery technologies include GalNAc conjugates and lipid nanoparticles for liver delivery, as well as approaches for the central nervous system and other tissues. Alnylam has six marketed products and more than 20 clinical programs, including late-stage programs. In 2025, four products are directly commercialized by Alnylam and two by collaborators.

Company details
Sector
Health Care
Industry (SIC)
Pharmaceutical Preparations
Headquarters
CAMBRIDGE, MA
Fiscal year end
December
CIK
1178670
SIC
2834

Financial performance, year by year

Fiscal 2013–2025 · USD
$-1.72B$55.91M$1.84B$3.62B$5.40B2013201420152016201720182019202020212022202320242025Last 12 moLast 12 monthsLast 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 Alnylam Pharmaceuticals, Inc. — and what changed

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

699
funds hold it
0 of 35
superinvestors hold it
$22.25B
held by funds, at market
55.0%
of shares held by funds
2
bond issues held by funds

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

0.64%of fund net assets
VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.06%of fund net assets
1.27%of fund net assets
VANGUARD MID-CAP INDEX FUND
VO · VANGUARD INDEX FUNDS
0.39%of fund net assets
0.17%of fund net assets

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

Alnylam Pharmaceuticals, Inc.’s bonds, as funds hold them

Funds report holding 2 issues of Alnylam Pharmaceuticals, Inc.’s debt, $154.25M at market value — what funds hold, not the company’s total debt. Weighted-average coupon 1.00%, maturing 2027 to 2028.

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”.

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

Connected research

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