Position in ALNY
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$24,815,250
-$5,008,500 QoQ
Shares Held
75,000
0.0% QoQ
Ownership
0.057%
of shares outstanding
% of Portfolio
1.88%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ALNY Over Time
Shares Held
Position Value (USD)
Derivatives in ALNY
reported options exposure · as of Sep 30, 2023CallValue
$3,542,000
CallShares
20,000
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Biotechnology
Healthcare · as of Mar 31, 2026Casdin Capital, LLC holds $705,487,766 across 26 Biotechnology names. ALNY ranks #7 (3.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RVMD |
Revolution Medicines, Inc.
|
2,577,333 | $250,645,634 | |
| 2 | RLAY |
Relay Therapeutics, Inc.
|
14,418,574 | $143,464,811 | |
| 3 | GPCR |
Structure Therapeutics Inc.
|
1,175,000 | $56,635,000 | |
| 4 | DNLI |
Denali Therapeutics Inc.
|
1,840,000 | $35,328,000 | |
| 5 | BEAM |
Beam Therapeutics Inc.
|
1,350,000 | $32,170,500 | |
| 6 | NGNE |
Neurogene Inc.
|
1,420,361 | $28,634,477 | |
| 7 | ALNY |
Alnylam Pharmaceuticals, Inc.
This page
|
75,000 | $24,815,250 | |
| 8 | MAZE |
Maze Therapeutics, Inc.
|
758,857 | $22,651,881 |
All Filings in ALNY
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $24,815,250 | 75,000 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $29,823,750 | 75,000 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $25,080,000 | 55,000 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $26,576,335 | 81,500 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $32,402,400 | 120,000 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $32,943,400 | 140,000 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $46,755,100 | 170,000 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $41,310,000 | 170,000 | Shares | Sole | 2024-10-18 | |
| 2024-03-31 | $53,503,100 | 358,000 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $37,324,950 | 195,000 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $35,420,000 | 200,000 | Shares | Sole | 2023-11-14 | |
| 2023-09-30 | $3,542,000 | 20,000 | Call | Sole | 2023-11-14 | |
| 2023-06-30 | $53,183,200 | 280,000 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $54,086,400 | 270,000 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $86,742,250 | 365,000 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $129,703,680 | 648,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $117,409,250 | 805,000 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $163,290,000 | 1,000,000 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $169,580,000 | 1,000,000 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $188,810,000 | 1,000,000 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $169,520,000 | 1,000,000 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $124,247,200 | 880,000 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $101,376,600 | 780,000 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $90,272,000 | 620,000 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $81,460,500 | 550,000 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $63,677,250 | 585,000 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||