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Ionis Pharmaceuticals Inc

IONS
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0000874015

In the last 90 days, Ionis Pharmaceuticals Inc insiders filed 1 open-market purchase and 4 sales; 515 institutions reported holding it in 13F filings for Q2 2026, worth $14.3B in total; ARK Invest is the only superinvestor holding it.

13F holders, Q1 2022

Institutional positions in Ionis Pharmaceuticals Inc as of Mar 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
333
−3 vs. Q4 2021
Shares held
125.0M
+1.76M (+1.4%) vs. Q4 2021
Total value
$4.63B
+$876.1M (+23.4%) vs. Q4 2021
New holders
47
107 more added
Sold out
50
109 more reduced

5 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2021: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting IONS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2022: 333 institutions
Q1 2021: 365 institutionsQ2 2021: 338 institutionsQ3 2021: 326 institutionsQ4 2021: 341 institutionsQ1 2022: 333 institutionsQ2 2022: 351 institutionsQ3 2022: 350 institutionsQ4 2022: 339 institutionsQ1 2023: 315 institutionsQ2 2023: 305 institutionsQ3 2023: 312 institutionsQ4 2023: 365 institutionsQ1 2024: 361 institutionsQ2 2024: 357 institutionsQ3 2024: 354 institutionsQ4 2024: 356 institutionsQ1 2025: 344 institutionsQ2 2025: 363 institutionsQ3 2025: 437 institutionsQ4 2025: 494 institutionsQ1 2026: 497 institutionsQ2 2026: 515 institutions
Value heldQ1 2022: $4.63B
Q1 2021: $5.55BQ2 2021: $4.96BQ3 2021: $4.08BQ4 2021: $3.75BQ1 2022: $4.63BQ2 2022: $4.61BQ3 2022: $5.59BQ4 2022: $4.93BQ1 2023: $4.69BQ2 2023: $5.60BQ3 2023: $6.35BQ4 2023: $7.21BQ1 2024: $6.17BQ2 2024: $6.83BQ3 2024: $6.31BQ4 2024: $5.61BQ1 2025: $5.03BQ2 2025: $6.67BQ3 2025: $11.0BQ4 2025: $13.5BQ1 2026: $13.0BQ2 2026: $14.3B
Institutions holding IONS and their total value by quarter
QuarterHoldersValue
Q2 2026515$14.3B
Q1 2026497$13.0B
Q4 2025494$13.5B
Q3 2025437$11.0B
Q2 2025363$6.67B
Q1 2025344$5.03B
Q4 2024356$5.61B
Q3 2024354$6.31B
Q2 2024357$6.83B
Q1 2024361$6.17B
Q4 2023365$7.21B
Q3 2023312$6.35B
Q2 2023305$5.60B
Q1 2023315$4.69B
Q4 2022339$4.93B
Q3 2022350$5.59B
Q2 2022351$4.61B
Q1 2022333$4.63B
Q4 2021341$3.75B
Q3 2021326$4.08B
Q2 2021338$4.96B
Q1 2021365$5.55B

Institutions, Q1 2022

Shares, value and share of portfolio for each institution holding Ionis Pharmaceuticals Inc; share changes are against Q4 2021.

Institutions holding IONS in Q1 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Jane Street Group, LLC27,791$1.03M0.00%−24,759−47.1%Reduced
Grandfield & Dodd, LLC28,001$1.04M0.07%+1,230+4.6%Added
MML Investors Services, LLC28,122$1.04M0.01%+2,905+11.5%Added
First Foundation Advisors29,130$1.08M0.04%+1,158+4.1%Added
Tudor Investment Corp Et Al29,525$1.09M0.03%−148,861−83.4%Reduced
Principal Financial Group Inc30,211$1.12M0.00%−1,544−4.9%Reduced
Truist Financial Corp31,270$1.16M0.00%+333+1.1%Added
Amalgamated Bank31,934$1.18M0.01%+2,610+8.9%Added
Amalgamated Financial Corp.31,934$1.18M0.01%+31,934New
Macquarie Group Ltd32,006$1.19M0.00%−543−1.7%Reduced
Employees Retirement System of Texas32,409$1.20M0.01%00.0%Unchanged
Deutsche Bank AG33,362$1.24M0.00%+19,275+136.8%Added
Arizona State Retirement System34,354$1.27M0.01%+164+0.5%Added
Ergoteles LLC38,000$1.41M0.05%+30,045+377.7%Added
Gotham Asset Management, LLC38,427$1.42M0.04%+38,427New
Janney Montgomery Scott LLC38,614$1.43M0.01%+2,190+6.0%Added
Capital Counsel LLC41,010$1.52M0.07%+430+1.1%Added
NJ State Employees Deferred Compensation Plan42,000$1.55M0.21%00.0%Unchanged
Koss-Olinger Consulting, LLC44,120$1.63M0.26%+14,959+51.3%Added
Capital Fund Management S.A.44,719$1.66M0.04%+16,611+59.1%Added
Trexquant Investment LP47,762$1.77M0.08%+13,859+40.9%Added
Erste Asset Management GmbH51,300$1.83M0.03%00.0%Unchanged
Susquehanna International Group, LLP49,726$1.84M0.00%−154,529−75.7%Reduced
Raymond James Financial Services Advisors, Inc.50,585$1.87M0.00%+1,604+3.3%Added
Treasurer of the State of North Carolina51,671$1.91M0.01%+825+1.6%Added
Schonfeld Strategic Advisors LLC55,543$2.06M0.02%+55,543New
Eaton Vance Management56,565$2.10M0.00%+28,873+104.3%Added
AlphaCrest Capital Management LLC58,292$2.16M0.12%+5,385+10.2%Added
Alliancebernstein L.P.61,939$2.29M0.00%−41,275−40.0%Reduced
Voya Investment Management LLC64,265$2.38M0.00%−1,243−1.9%Reduced
Guggenheim Capital LLC68,237$2.53M0.02%−4,741−6.5%Reduced
Rhenman & Partners Asset Management AB71,000$2.63M0.26%−4,000−5.3%Reduced
Manufacturers Life Insurance Company, The75,298$2.69M0.00%+75,298New
PFS Investments Inc.75,061$2.78M0.05%−1,118−1.5%Reduced
Public Employees Retirement System of Ohio77,666$2.88M0.01%−6,995−8.3%Reduced
PDT Partners, LLC80,070$2.97M0.26%+12,373+18.3%Added
Citigroup Inc81,336$3.01M0.00%−104,711−56.3%Reduced
Allianz Asset Management GmbH81,830$3.03M0.00%00.0%Unchanged
Davenport & Co LLC83,863$3.11M0.02%−800−0.9%Reduced
AXA S.A.86,300$3.20M0.01%−1,600−1.8%Reduced
Allspring Global Investments Holdings, LLC87,285$3.23M0.00%−11,289−11.5%Reduced
State of New Jersey Common Pension Fund D88,879$3.29M0.01%−6,355−6.7%Reduced
International Biotechnology Trust PLC154,088$3.30M1.45%−201,000−56.6%Reduced
Envestnet Asset Management Inc90,871$3.37M0.00%−421−0.5%Reduced
BNP Paribas Arbitrage, SA90,936$3.37M0.01%−215,317−70.3%Reduced
LPL Financial LLC94,553$3.50M0.00%+5,887+6.6%Added
Cubist Systematic Strategies, LLC95,530$3.54M0.03%−201,652−67.9%Reduced
Bard Financial Services, Inc.99,020$3.67M0.30%+57,500+138.5%Added
Gateway Investment Advisers LLC99,129$3.67M0.04%+14,026+16.5%Added
HRT Financial LP109,376$4.05M0.03%+109,376New
Jump Financial, LLC109,827$4.07M0.17%−10,673−8.9%Reduced
State of Wisconsin Investment Board114,451$4.24M0.01%+97,397+571.1%Added
DekaBank Deutsche Girozentrale124,776$4.45M0.01%+15,300+14.0%Added
Peregrine Capital Management LLC130,320$4.83M0.11%−9,401−6.7%Reduced
Rhumbline Advisers133,560$4.95M0.01%−6,189−4.4%Reduced
Renaissance Technologies LLC134,914$5.00M0.01%−95,900−41.5%Reduced
Invesco Ltd.139,992$5.18M0.00%+7,750+5.9%Added
Alps Advisors Inc145,615$5.39M0.06%−17,809−10.9%Reduced
New York State Common Retirement Fund146,800$5.44M0.01%−7,000−4.6%Reduced
BLB&B Advisors, LLC149,745$5.55M0.37%−1,190−0.8%Reduced
Private Advisor Group, LLC156,968$5.81M0.04%+41,226+35.6%Added
Connor, Clark & Lunn Investment Management Ltd.157,193$5.82M0.03%+44,668+39.7%Added
Sonora Investment Management Group, LLC157,261$5.83M0.66%+471+0.3%Added
Eversept Partners, LP158,806$5.88M0.54%−225,983−58.7%Reduced
Legal & General Group Plc162,318$6.01M0.00%+3,974+2.5%Added
Tocqueville Asset Management L.P.167,505$6.20M0.09%−2,900−1.7%Reduced
California State Teachers Retirement System168,362$6.24M0.01%−15,642−8.5%Reduced
State Board of Administration of Florida Retirement System170,728$6.32M0.01%−2,532−1.5%Reduced
Sio Capital Management, LLC175,568$6.50M2.62%−146,998−45.6%Reduced
Tekla Capital Management LLC175,680$6.51M0.23%00.0%Unchanged
Rafferty Asset Management, LLC178,794$6.62M0.04%−10,845−5.7%Reduced
Privium Fund Management B.V.180,107$6.67M1.50%−450,092−71.4%Reduced
Credit Suisse AG180,626$6.69M0.01%+3,859+2.2%Added
Sector Gamma AS188,439$6.98M1.52%−21,098−10.1%Reduced
Voloridge Investment Management, LLC189,556$7.02M0.04%−77,289−29.0%Reduced
Millennium Management LLC191,191$7.08M0.01%−1,431,947−88.2%Reduced
Woodline Partners LP192,651$7.14M0.12%−218,803−53.2%Reduced
Majedie Asset Management Ltd195,492$7.22M0.59%+19,984+11.4%Added
Tang Capital Management LLC200,000$7.41M1.50%+200,000New
UBS Group AG201,201$7.45M0.00%+7,612+3.9%Added
Pictet Asset Management SA206,141$7.63M0.01%+23,054+12.6%Added
UBS Asset Management Americas Inc206,906$7.66M0.00%+23,154+12.6%Added
Altrinsic Global Advisors LLC208,158$7.71M0.27%−191,234−47.9%Reduced
Hudson Bay Capital Management LP210,000$7.78M0.11%−95,000−31.1%Reduced
Morningstar Investment Services LLC222,681$8.00M0.09%+3,249+1.5%Added
Parametric Portfolio Associates LLC230,804$8.55M0.00%+5,698+2.5%Added
Raymond James & Associates256,726$9.51M0.01%−1,259−0.5%Reduced
Bank of Montreal268,497$9.58M0.01%+39,090+17.0%Added
Russell Investments Group, Ltd.284,130$10.5M0.02%+89,985+46.3%Added
California Public Employees Retirement System294,815$10.9M0.01%+10,391+3.7%Added
Nuveen Asset Management, LLC315,819$11.0M0.00%−35,657−10.1%Reduced
Swiss National Bank300,500$11.1M0.01%+21,200+7.6%Added
Dowling & Yahnke LLC302,571$11.2M0.49%+1500.0%Added
Sicart Associates LLC304,782$11.3M2.92%+22,251+7.9%Added
Barclays PLC316,350$11.7M0.01%−13,588−4.1%Reduced
Stifel Financial Corp340,566$12.6M0.02%−17,382−4.9%Reduced
Baillie Gifford & Co348,863$12.9M0.01%+33,043+10.5%Added
Dimensional Fund Advisors LP353,481$13.1M0.00%−33,210−8.6%Reduced
Assenagon Asset Management S.A.357,896$13.3M0.04%+309,495+639.4%Added
Nomura Holdings Inc394,154$15.3M0.12%+21,674+5.8%Added