IONS icon

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
301
$3.38K
302
$3.32K
303
$3.14K
304
$3.08K
305
$3.05K
306
$3.02K
307
$3K
308
$2.87K
309
$2.55K
310
$2.41K
311
$2.41K
312
$2.34K
313
$2.14K
314
$2K
315
$1.78K
316
$1.66K
317
$1.6K
318
$1.57K
319
$1.24K
320
$1.21K
321
$1.15K
322
$1K
323
$1K
324
$942
325
$845