ALNY

Alnylam Pharmaceuticals, Inc.

$318.85

Closing price as of Apr 2, 2026

6 superinvestors own ALNY

Based on latest 13F filings — data is 45–90 days delayed

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Dodge & Cox	Dodge & Cox	0.42%	1,964,415	$781.1M	2025Q4	Reduced
Viking Global Investors	Viking Global Investors	0.10%	232,000	$3.1M	2005Q4	New
First Eagle Investment Management	First Eagle Investment Management	0.01%	26,500	$2.9M	2020Q1	New
Meridian / ArrowMark	Meridian Contrarian Fund	0.00%	1,534	$223K	2020Q3	Held
Kenneth Fisher	Fisher Asset Management	0.00%	6,045	$2.0M	2026Q1	New
Polen Capital Management	Polen Capital Management	0.00%	693	$316K	2025Q3	New

Open-market purchases (P) and sales (S) from SEC Form 4 filings · last 12 months

No open-market insider trades in the last 12 months.

Form 4 filings for option exercises and other transaction types are excluded.

STOCK Act disclosures · last 12 months

Congressional trade data coming soon.

We are sourcing STOCK Act disclosures and will display them here shortly.

What Is SEC Form 4?

Understand the insider trade filings behind ALNY activity.

What Is a 13F Filing?

How superinvestors disclose their quarterly holdings.

Insider Cluster Buying

Why multiple insiders buying together is a strong signal.

Superinvestor Consensus

The most widely held stocks across all tracked institutions.