Alnylam Pharmaceuticals Inc
$267.40+8.7%
+$13.9B
Net Activity
+50.34% total shares
Institutions Holding
792
Popularity Rank
#663
Avg Weight
0.10%
Total Value
$41.1B
Market Cap
$36.0B
792 institutions currently hold ALNY, with 412 net buyers and 364 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
364
Net Buying Institutions
412
Top 5 by Value
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Across its top 20 institutional holders, ALNY's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 39/100).
ALNY ranks #663 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
792 institutions disclose a position in ALNY, but none treat it as a major bet — even Deep Track Capital, LP, its most concentrated holder, allocates just 3.6% of its own portfolio to it.
Manufacturers Life Insurance Company, THE has added to its ALNY position for two straight quarters, increasing it by $243.9M to reach $269.1M today.
Capital World Investors has trimmed its ALNY position for two straight quarters, cutting it by $3.1B while still holding $3.4B.
ALNY is up 8.7% today, and institutions have been net buyers of $13.9B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
ALNY posted net income of $808.0M over the trailing twelve months, and currently trades at a P/E of 44.6.
+$4.2B
Total Buy Value
$2.7B
Total Sell Value
412
Net Buyers
364
Net Sellers
ALNY
Q2 2026
Top 5 Institutional Movers
ALNY does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Garg Pushkal | 2026-03-05 | $163K |
| Sell | Garg Pushkal | 2026-03-05 | $166K |
| Sell | Garg Pushkal | 2026-03-05 | $239K |
| Sell | Garg Pushkal | 2026-03-05 | $211K |
| Sell | Fitzgerald Kevin Joseph | 2026-03-05 | $40K |
| Sell | Fitzgerald Kevin Joseph | 2026-03-05 | $75K |
| Sell | Fitzgerald Kevin Joseph | 2026-03-05 | $48K |
| Sell | Fitzgerald Kevin Joseph | 2026-03-05 | $50K |
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
Alnylam Pharmaceuticals reported its financial results for the quarter ended June 30, 2026, in a press release on July 30, 2026. The release is attached as Exhibit 99.1 to this 8-K, and Alnylam has marked the information as "furnished" rather than "filed" for SEC purposes. The excerpt doesn't include actual numbers, so this is essentially a notice that the quarterly earnings announcement is out.
View Full Filing (SEC EDGAR)02043Q107
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64
Articles
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ALNY Stock Rebounds As Analysts Back RNAi Pipeline Strength
ALNY Reiterated by HC Wainwright & Co. -- Price Target Maintained at $455
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Access ALNY's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/ALNYCLI
npx alphasmo stocks get ALNY