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ALNY · Healthcare

Alnylam Pharmaceuticals Inc

USA Healthcare Filing: 2026-06-30
30/100
Smart-money confidence1 of 3 sources positive
Below average interest

No standout activity across the feeds we track.

What this band has actually done: stocks scoring 0–25 beat the S&P 500 over the next three months 39.9% of the time, across 100,496 cases since 2015. That is below a coin flip — and so is every other band, because the median stock loses to a cap-weighted index. How we measured this

Hedge funds
40
Congress
No data
Insiders
No data
Cross-source blend of hedge-fund breadth, Congress trades, and insider Form 4s.  ·  how the score works
Market cap
$34.2B
Industry
Biotechnology
Sector
Healthcare
Exchange
NasdaqGS
About ALNYLAM PHARMACEUTICALS INC

Alnylam Pharmaceuticals, Inc. discovers, develops, manufactures, and commercializes therapeutics based on ribonucleic acid interference in the United States, Europe, and internationally. The company offers ONPATTRO for hereditary transthyretin-mediated (hATTR) amyloidosis; AMVUTTRA for ATTR and hATTR amyloidosis; Leqvio for hypercholesterolemia; Qfitlia for hemophilia A or B; GIVLAARI for acute hepatic porphyria; and OXLUMO for primary hyperoxaluria type 1. It also develops a range of products in Phase 3 trial, such as Nucresiran for ATTR amyloidosis; Zilebesiran for hypertension; Cemdisiran…

Who's behind the signal
Every informed buyer we can see on ALNY, across all three feeds.
Hedge funds · 8
D.E. Shaw & Co Increased +4%
Citadel Advisors Increased +716%
Baillie Gifford & Co Decreased −2%
Dodge & Cox Unchanged
AQR Capital Management Decreased −20%
+2 more in the full breakdown below ↓
Insiders
No significant Form 4 insider activity in the window.
Congressional trades · 9 on record
Disclosures from 2020-04-06 to 2026-08-11
Trade date Member Chamber Action Amount
2026-08-11 Cory A. Booker · D-NJ Senate Sold $1,001 - $15,000
2025-05-12 Jefferson Shreve · R-IN House Sold $15,001 - $50,000
2024-01-29 Josh Gottheimer · D-NJ House Sold $1,001 - $15,000
2024-01-11 Josh Gottheimer · D-NJ House Bought $1,001 - $15,000
2023-12-11 Josh Gottheimer · D-NJ House Sold $1,001 - $15,000
2023-03-06 Daniel S. Goldman · D-NY House Bought $15,001 - $50,000
2022-09-28 Josh Gottheimer · D-NJ House Bought $1,001 - $15,000
2020-11-13 Josh Gottheimer · D-NJ House Sold $1,001 - $15,000
2020-04-06 Josh Gottheimer · D-NJ House Bought $1,001 - $15,000
Not a model pick — but on our radar. ALNYLAM PHARMACEUTICALS INC isn't in the top-10 model right now, but 8 tracked investors hold it. Everything below is real signal from public filings — treat this as a watch candidate, not a conviction call.
8
Investors
0
New positions
2
Increasing
5
Decreasing
1
Unchanged
Price History
Loading price data...
A member of Congress bought A member sold
Return: High: Low:

Markers sit on the transaction date the member disclosed, snapped to the nearest close on the chart. They are not the date the public found out — that came later, and the gap is its own page. Every marker is listed by name in the table above.

Who's Holding This Stock
Position sizes and recent activity from tracked institutional investors
Portfolio Allocation
How much of each investor's portfolio is allocated to ALNYLAM PHARMACEUTICALS INC
⚠ Disclaimer: This page is for informational purposes only. Holdings data from SEC EDGAR 13F filings, delayed up to 135 days. Not a recommendation to buy or sell ALNYLAM PHARMACEUTICALS INC or any security.

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