Weiss Asset Management LP[1 »

Ionis Pharmaceuticals shares owned by Weiss Asset Management LP[1

Quarter-by-quarter ownership of Ionis Pharmaceuticals shares owned by Weiss Asset Management LP[1 from 13F filings

Historical chart of Weiss Asset Management LP[1 investment in Ionis Pharmaceuticals

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All positions including Ionis Pharmaceuticals held by Weiss Asset Management LP[1 consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Ionis Pharmaceuticals by Weiss Asset Management LP[1

Quarter filed Position value Share count Share price at filing
2025-09-30 $132M 107M 1.23
2025-06-30 $77M 77M 1.01
2025-03-31 $61M 62M 0.99
2024-12-31 $77M 79M 0.97
2024-09-30 $27M 27M 1.00

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Strategy Cl A New (MSTR)
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Ishares Ethereum Tr SHS Put Option (ETHA)
Interdigital Note 3.500% 6/0 (Principal)
Tesla Motors (TSLA)
Coinbase Global Com Cl A (COIN)
Strategy Note 0.625% 9/1 (Principal)
Super Micro Computer Note 3.500% 3/0 (Principal)
Ionis Pharmaceuticals Note 4/0 (Principal)
Theravance Biopharma (TBPH)
Sunrun Note 4.000% 3/0 (Principal)
Bridgebio Pharma Note 2.500% 3/1 (Principal)
Circle Internet Group Com Cl A (CRCL)
Broadcom Put Option (AVGO)

View all positions for Weiss Asset Management LP[1

Top funds holding Ionis Pharmaceuticals

Linden Advisors
Weiss Asset Management LP[1
DeepCurrents Investment Group
Capstone Investment Advisors
Tenor Capital Management
CSS
Ing Investment Management
D. E. Shaw & Co
State Street Corporation
FMR
M&G
BlackRock
MacKay Shields
Man Group
Lazard Asset Management

View all funds holding Ionis Pharmaceuticals