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Equibles

Weiss Asset Management LP

Position in RNA — Atrium Therapeutics, Inc.

CIK 1357550 BOSTON, MA
Back to RNA Full portfolio

Position in RNA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$2,955,368
-$262,804 QoQ
Shares Held
219,730
-8.7% QoQ
Ownership
1.28%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#15
of 154 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in RNA Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Weiss Asset Management LP holds $396,341,883 across 27 Biotechnology names. RNA ranks #13 (0.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 TBPH
Theravance Biopharma, Inc.
 7,457,060 $126,770,020
2 ROIV
Roivant Sciences Ltd.
 2,542,652 $89,984,454
3 MLTX
MoonLake Immunotherapeutics
 2,581,813 $50,267,899
4 BBIO
BridgeBio Pharma, Inc.
 320,184 $23,847,304
5 TGTX
Tg Therapeutics, Inc.
 375,082 $20,607,005
6 AXSM
Axsome Therapeutics, Inc.
 80,000 $19,581,600
7 ARWR
Arrowhead Pharmaceuticals, Inc.
 134,014 $10,923,481
8 MDGL
Madrigal Pharmaceuticals, Inc.
 19,325 $10,376,558

All Filings in RNA

Export CSV
2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,955,368 219,730
2026-03-31 $3,218,172 240,701