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Ionis Pharmaceuticals

339 hedge funds and large institutions have $5.01B invested in Ionis Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 53 funds opening new positions, 103 increasing their positions, 122 reducing their positions, and 61 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more ownership

Funds ownership:

less funds holding

Funds holding:

11% less capital invested

Capital invested by funds: $5.61B → $5.01B (-$606M)

13% less first-time investments, than exits

New positions opened: 53 | Existing positions closed: 61

16% less repeat investments, than reductions

Existing positions increased: 103 | Existing positions reduced: 122

Holders
339
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
6
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$24.8M
Puts
$18.8M
Net Calls
Net Calls Change

Top Buyers

1 +$79.4M
2 +$60.5M
3 +$57.7M
4
Citadel Advisors
Citadel Advisors
Florida
+$39.6M
5
Fidelity Investments
Fidelity Investments
Massachusetts
+$27.9M
Name Holding Trade Value Shares
Change
Change in
Stake
126
$1.58M
127
$1.45M
128
$1.43M
129
$1.4M
130
$1.33M
131
$1.3M
132
$1.3M
133
$1.27M
134
$1.25M
135
$1.25M
136
$1.23M
137
$1.16M
138
$1.14M
139
$1.14M
140
$1.12M
141
$1.1M
142
$1.09M
143
$1.06M
144
$1.06M
145
$1.05M
146
$1.04M
147
$1.03M
148
$1.01M
149
$962K
150
$917K