Ionis Pharmaceuticals, Inc.

Historical 13F Holders

Symbol
IONS
CUSIP
462222100
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 462222100 since 12/18/2024, largest first.

Filer % of Class Filed
Capital World Investors 13G/A 12.8% 5/14/2026
Event 3/31/2026
BlackRock, Inc. 13G/A 5.7% 4/17/2025
Event 3/31/2025
Vanguard Capital Management LLC 13G 5.1% 4/30/2026
Event 3/31/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (3)
Wellington Management Group LLP 13G/A
4.3% 8/12/2025
Event 6/30/2025
T. Rowe Price Investment Management, Inc. 13G/A 3.7% 5/15/2026
Event 3/31/2026
Vanguard Group Inc 13G/A 0% 3/27/2026
Event 3/13/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 11 12.0 k $525 k
2026 Q2 559 194 M $14.4 B
2026 Q1 531 173 M $13.0 B
2025 Q4 538 176 M $13.9 B
2025 Q3 486 176 M $11.0 B
2025 Q2 391 170 M $6.70 B
2025 Q1 376 167 M $5.03 B
2024 Q4 394 161 M $5.61 B
2024 Q3 395 159 M $6.34 B
2024 Q2 389 146 M $6.94 B
2024 Q1 400 145 M $6.31 B
2023 Q4 397 145 M $7.36 B
2023 Q3 339 140 M $6.36 B
2023 Q2 326 137 M $5.60 B
2023 Q1 336 132 M $4.71 B
2022 Q4 361 135 M $5.10 B
2022 Q3 373 127 M $5.60 B
2022 Q2 369 125 M $4.63 B
2022 Q1 354 125 M $4.63 B
2021 Q4 372 124 M $3.77 B
2021 Q3 352 122 M $4.08 B
2021 Q2 365 124 M $4.96 B
2021 Q1 394 124 M $5.55 B
2020 Q4 421 121 M $6.84 B
2020 Q3 405 119 M $5.63 B
2020 Q2 408 120 M $7.10 B
2020 Q1 396 119 M $5.63 B
2019 Q4 426 122 M $7.40 B
2019 Q3 404 122 M $7.33 B
2019 Q2 440 127 M $8.17 B
2019 Q1 436 117 M $9.53 B
2018 Q4 363 119 M $6.45 B
2018 Q3 361 120 M $6.20 B
2018 Q2 336 119 M $4.94 B
2018 Q1 355 116 M $5.09 B
2017 Q4 348 114 M $5.72 B
2017 Q3 337 115 M $5.84 B
2017 Q2 317 112 M $5.68 B
2017 Q1 296 111 M $4.47 B
2016 Q4 340 109 M $5.21 B
2016 Q3 314 107 M $3.91 B
2016 Q2 315 111 M $2.58 B
2016 Q1 339 105 M $4.27 B
2015 Q4 377 106 M $6.55 B