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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
276
$10.9K
277
$10.3K
278
$9.05K
279
$9.05K
280
$9K
281
$8.26K
282
$7.91K
283
$7.84K
284
$7.84K
285
$7.81K
286
$7.54K
287
$6.59K
288
$6.03K
289
$5.97K
290
$5.79K
291
$4.53K
292
$4.28K
293
$4.13K
294
$4.08K
295
$3.8K
296
$3.77K
297
$3.65K
298
$3.59K
299
$3.59K
300
$3.44K