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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
226
$211K
227
$210K
228
$208K
229
$205K
230
$204K
231
$203K
232
$197K
233
$185K
234
$182K
235
$174K
236
$166K
237
$151K
238
$122K
239
$110K
240
$97.9K
241
$95.2K
242
$90.5K
243
$80.2K
244
$77K
245
$75.4K
246
$73K
247
$71.6K
248
$70.8K
249
$65K
250
$62.8K