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Ionis Pharmaceuticals

341 hedge funds and large institutions have $5.01B invested in Ionis Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 54 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)

11% less first-time investments, than exits

New positions opened: 54 | Existing positions closed: 61

16% less repeat investments, than reductions

Existing positions increased: 103 | Existing positions reduced: 122

Holders
341
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
Name Holding Trade Value Shares
Change
Change in
Stake
276
$11.4K
277
$10.9K
278
$10.3K
279
$9.05K
280
$9.05K
281
$9K
282
$8.26K
283
$7.91K
284
$7.84K
285
$7.84K
286
$7.81K
287
$7.54K
288
$6.59K
289
$6.03K
290
$5.97K
291
$5.79K
292
$4.53K
293
$4.28K
294
$4.13K
295
$4.08K
296
$3.8K
297
$3.77K
298
$3.65K
299
$3.59K
300
$3.59K