Twin Securities, Inc.
Broker-DealerPosition in RNA — Atrium Therapeutics, Inc.
CIK 1351351
New York, NY
Position in RNA
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$667,336
New position
Shares Held
49,913
first reported quarter
Ownership
0.292%
of shares outstanding
% of Portfolio
0.33%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 100%
Shared 0%
None 0%
Position in Biotechnology
Healthcare · as of Mar 31, 2026Twin Securities, Inc. holds $22,536,995 across 6 Biotechnology names. RNA ranks #6 (3.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ACLX |
Arcellx, Inc.
|
53,982 | $6,198,213 | |
| 2 | TERN |
Terns Pharmaceuticals, Inc.
|
115,958 | $6,113,305 | |
| 3 | APLS |
Apellis Pharmaceuticals, Inc.
|
127,440 | $5,126,911 | |
| 4 | RVMD |
Revolution Medicines, Inc.
|
38,593 | $3,753,169 | |
| 5 | DAWN |
Day One Biopharmaceuticals, Inc.
|
31,626 | $678,061 | |
| 6 | RNA |
Atrium Therapeutics, Inc.
This page
|
49,913 | $667,336 |
All Filings in RNA
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $667,336 | 49,913 | Shares | Sole | 2026-05-15 | |
| No filing history on record for this holder in this stock. | ||||||