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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
76
$4.79M
77
$4.71M
78
$4.65M
79
$4.63M
80
$4.6M
81
$4.59M
82
$4.54M
83
$4.53M
84
$4.49M
85
$4.34M
86
$4.3M
87
$4.3M
88
$4.09M
89
$3.99M
90
$3.9M
91
$3.75M
92
$3.52M
93
$3.27M
94
$3.09M
95
$3.04M
96
$2.9M
97
$2.87M
98
$2.87M
99
$2.87M
100
$2.74M