ALNYLAM PHARMACEUTICALS INC (ALNY) Institutional Ownership and Insiders Activity
ALNYLAM PHARMACEUTICALS INC (ALNY) is widely held by institutional investors, with 774 firms reporting positions valued at approximately $41.95B based on SEC Form 13F filings for the quarter ended June 30, 2026.
Fmr Llc is the largest disclosed holder, reporting approximately $4.52B in ALNY holdings in its latest filing.
Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
774
Total Reported Value
$41.95B
Largest Holder
Fmr Llc
Largest Position
$4.52B
Insider Transactions (90d)
1
Latest Filing Quarter
Q3 2026
New Institutional Positions
2
Funds Exiting Positions
761
Top Institutional Owners
View allInvestorReported Balance
- Fmr Llc$4.52B
- Capital World Investors$3.35B
- Blackrock, Inc.$3.28B
- Capital Research Global Investors$2.94B
- Banque Cantonale Vaudoise$2.20B
Related ALNY Institutional Insights:
- ALNY 13F Institutional Holders
- ALNY Top Institutional Shareholders
- ALNY Institutional Ownership Changes
- Healthcare Sector Institutional Ownership
- Healthcare Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Healthcare Stocks By Institutional Investors
- Most Sold Healthcare Stocks By Institutional Investors
- ALNY Insider Trading & SEC Form 4 Activity
- ALNY Articles
- Top Institutional Investor Stock Rankings