Institutional shares held 108 Million
839K calls
771K puts
Total value of holdings $29.2B
$227M calls
$208M puts
Market Cap $33.2B
123,028,000 Shares Out.
Institutional ownership 88.03%
# of Institutions 674


Latest Institutional Activity in ALNY

Top Purchases

Q1 2025
Gamma Investing LLC Shares Held: 166K ($44.9M)
Q1 2025
Summit Global Investments Shares Held: 3.15K ($849K)
Q1 2025
Merit Financial Group, LLC Shares Held: 5.31K ($1.43M)
Q1 2025
Rhumbline Advisers Shares Held: 181K ($49M)
Q1 2025
Central Pacific Bank Trust Division Shares Held: 2.65K ($716K)

Top Sells

Q1 2025
Gateway Investment Advisers LLC Shares Held: 6.54K ($1.77M)
Q1 2025
E. Ohman J:Or Asset Management Ab Shares Held: 5.8K ($1.57M)
Q1 2025
Princeton Global Asset Management LLC Shares Held: 25 ($6.75K)
Q1 2025
Nixon Peabody Trust CO Shares Held: 2.28K ($615K)
Q1 2025
Principia Wealth Advisory, LLC Shares Held: 3 ($810)

About ALNY

Alnylam Pharmaceuticals, Inc., a biopharmaceutical company, focuses on discovering, developing, and commercializing novel therapeutics based on ribonucleic acid interference. The company's pipeline of investigational RNAi therapeutics focuses on genetic medicines, cardio-metabolic diseases, hepatic infectious diseases, and central nervous system (CNS)/ocular diseases. Its marketed products include ONPATTRO (patisiran), a lipid complex injection for the treatment of the polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults; GIVLAARI for the treatment of adults with acute hepatic porphyria (AHP); and OXLUMO (lumasiran) for the treatment of primary hyperoxaluria type 1 (PH1). In addition, the company is developing givosiran for the treatment of adolescent patients with AHP; patisiran for the treatment of transthyretin amyloidosis, or ATTR amyloidosis, with cardiomyopathy; cemdisiran to treat complement-mediated diseases; ALN-AAT02 for the treatment of AAT deficiency-associated liver disease; ALN-HBV02 to treat chronic HBV infection; Zilebesiran to treat hypertension; and ALN-HSD to treat NASH. Further, it offers Fitusiran for the treatment of hemophilia and rare bleeding disorders, Inclisiran to treat hypercholesterolemia, lumasiran for the treatment of advanced PH1 and recurrent renal stones, and vutrisiran for the treatment of ATTR amyloidosis, which is in phase 3 clinical trial. Alnylam Pharmaceuticals, Inc. has strategic collaborations with Regeneron Pharmaceuticals, Inc. to discover, develop, and commercialize RNAi therapeutics for a range of diseases by addressing therapeutic targets expressed in the eye and CNS; and Sanofi Genzyme to discover, develop, and commercialize RNAi therapeutics. It also has license and collaboration agreements with Novartis AG; Vir Biotechnology, Inc.; Dicerna Pharmaceuticals, Inc.; Ionis Pharmaceuticals, Inc.; and PeptiDream, Inc. The company was founded in 2002 and is headquartered in Cambridge, Massachusetts.


Insider Transactions at ALNY

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
369K Shares
From 15 Insiders
Exercise of conversion of derivative security 229K shares
Grant, award, or other acquisition 139K shares
Sell / Disposition
277K Shares
From 9 Insiders
Open market or private sale 277K shares

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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