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Ionis Pharmaceuticals

343 hedge funds and large institutions have $5.03B invested in Ionis Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 54 funds opening new positions, 103 increasing their positions, 123 reducing their positions, and 60 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:

10% less first-time investments, than exits

New positions opened: 54 | Existing positions closed: 60

10% less capital invested

Capital invested by funds: $5.61B → $5.03B (-$580M)

16% less repeat investments, than reductions

Existing positions increased: 103 | Existing positions reduced: 123

Holders
343
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 +$86.1M
2 +$65.7M
3 +$62.7M
4
Citadel Advisors
Citadel Advisors
Florida
+$43M
5
Fidelity Investments
Fidelity Investments
Massachusetts
+$30.3M

Top Sellers

1 -$56.6M
2 -$28.1M
3 -$26.3M
4
VPC
Vestal Point Capital
New York
-$20.8M
5
State Street
State Street
Massachusetts
-$19M
Name Holding Trade Value Shares
Change
Change in
Stake
201
$313K
202
$311K
203
$309K
204
$303K
205
$302K
206
$301K
207
$298K
208
$297K
209
$293K
210
$285K
211
$282K
212
$276K
213
$275K
214
$259K
215
$257K
216
$256K
217
$256K
218
$253K
219
$250K
220
$248K
221
$243K
222
$233K
223
$228K
224
$219K
225
$216K