GTS SECURITIES LLC
Broker-DealerPosition in ALNY — Alnylam Pharmaceuticals, Inc.
CIK 1452765
NEW YORK, NY
Position in ALNY
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$348,075
+$139,309 QoQ
Shares Held
1,052
+100.4% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2023
9 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ALNY Over Time
Shares Held
Position Value (USD)
Derivatives in ALNY
reported options exposure · as of Sep 30, 2024CallValue
$7,480,816
CallShares
27,200
PutValue
$7,838,355
PutShares
28,500
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, 2026GTS SECURITIES LLC holds $7,337,364 across 30 Biotechnology names. ALNY ranks #6 (4.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
1,738 | $776,086 | |
| 2 | ACLX |
Arcellx, Inc.
|
6,338 | $727,729 | |
| 3 | APLS |
Apellis Pharmaceuticals, Inc.
|
15,604 | $627,748 | |
| 4 | REGN |
Regeneron Pharmaceuticals, Inc.
|
767 | $592,614 | |
| 5 | CRSP |
CRISPR Therapeutics AG
|
7,787 | $370,427 | |
| 6 | ALNY |
Alnylam Pharmaceuticals, Inc.
This page
|
1,052 | $348,075 | |
| 7 | INSM |
INSMED Inc
|
1,991 | $325,568 | |
| 8 | ABVX |
Abivax S.A.
|
2,652 | $295,300 |
All Filings in ALNY
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $348,075 | 1,052 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $208,766 | 525 | Shares | Defined | 2026-02-13 | |
| 2025-06-30 | $243,589 | 747 | Shares | Defined | 2025-08-08 | |
| 2024-12-31 | $273,665 | 1,163 | Shares | Defined | 2025-02-18 | |
| 2024-09-30 | $7,838,355 | 28,500 | Put | Defined | 2024-11-13 | |
| 2024-09-30 | $7,480,816 | 27,200 | Call | Defined | 2024-11-13 | |
| 2024-09-30 | $2,256,071 | 8,203 | Shares | Defined | 2024-11-13 | |
| 2024-06-30 | $9,817,200 | 40,400 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $13,097,700 | 53,900 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $266,328 | 1,096 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $7,068,985 | 47,300 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $4,752,510 | 31,800 | Put | Defined | 2024-05-15 | |
| 2023-12-31 | $376,312 | 1,966 | Shares | Defined | 2024-02-15 | |
| 2023-12-31 | $7,981,797 | 41,700 | Call | Defined | 2024-02-15 | |
| 2023-12-31 | $6,622,786 | 34,600 | Put | Defined | 2024-02-15 | |
| 2023-09-30 | $7,331,940 | 41,400 | Call | Defined | 2023-11-15 | |
| 2023-09-30 | $6,676,670 | 37,700 | Put | Defined | 2023-11-15 | |
| No filing history on record for this holder in this stock. | ||||||