GILDER GAGNON HOWE & CO LLC
Position in ALNY — Alnylam Pharmaceuticals, Inc.
CIK 902464
New York, NY
Position in ALNY
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$80,992,422
-$11,681,618 QoQ
Shares Held
269,051
-3.9% QoQ
Ownership
0.201%
of shares outstanding
% of Portfolio
0.84%
of 13F equity value
Holder Rank
#60
of 780 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 0%
Shared 0%
None 100%
Common Shares in ALNY Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026GILDER GAGNON HOWE & CO LLC holds $353,222,516 across 21 Biotechnology names. ALNY ranks #1 (22.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ALNY |
Alnylam Pharmaceuticals, Inc.
This page
|
269,051 | $80,992,422 | |
| 2 | NKTR |
Nektar Therapeutics
|
600,873 | $41,946,944 | |
| 3 | BBIO |
BridgeBio Pharma, Inc.
|
548,926 | $40,884,008 | |
| 4 | ARQT |
Arcutis Biotherapeutics, Inc.
|
1,313,211 | $34,432,392 | |
| 5 | CYTK |
Cytokinetics Inc
|
400,245 | $34,096,871 | |
| 6 | KYMR |
Kymera Therapeutics, Inc.
|
229,053 | $26,265,507 | |
| 7 | QURE |
uniQure N.V.
|
530,979 | $24,456,892 | |
| 8 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
28,573 | $15,342,272 |
All Filings in ALNY
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $80,992,422 | 269,051 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $92,674,040 | 280,092 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $126,971,633 | 319,305 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $150,170,376 | 329,321 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $109,921,025 | 337,088 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $93,312,161 | 345,575 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $85,997,098 | 365,463 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $105,609,594 | 383,993 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $96,863,688 | 398,616 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $60,553,104 | 405,173 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $112,366,283 | 587,045 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $105,370,780 | 594,979 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $113,716,318 | 598,696 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $124,440,386 | 621,208 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $154,381,480 | 649,617 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $132,902,837 | 663,983 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $110,054,763 | 754,575 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $129,198,966 | 791,224 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $142,373,941 | 839,568 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $174,400,776 | 923,684 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $156,929,071 | 925,726 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $131,256,295 | 929,643 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $114,910,376 | 884,130 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $129,644,569 | 890,416 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $130,894,878 | 883,768 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $100,052,416 | 919,177 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||