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Ionis Pharmaceuticals (IONS) Institutional Ownership

Ionis Pharmaceuticals logo
$34.20 -0.27 (-0.78%)
As of 10:16 AM Eastern
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Institutional Ownership Changes (13F Filings) for Ionis Pharmaceuticals (NASDAQ:IONS)

Current
Institutional Ownership
Percentage
93.86%
Number of
Institutional Buyers
(last 12 months)
160
Total
Institutional Inflows
(last 12 months)
$701.21M
Number of
Institutional Sellers
(last 12 months)
116
Total
Institutional Outflows
(last 12 months)
$2.53B
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IONS Institutional Buying and Selling by Quarter

Ionis Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/20/2025 Focus Partners Wealth9,832$297K0.0%+30.1%0.006%
5/19/2025 UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC659,435$19.90M0.0%+6.4%0.414%
5/16/2025 Exome Asset Management LLC135,616$4.09M3.5%+121.0%0.085%
5/16/2025 Goldman Sachs Group Inc.652,518$19.69M0.0%+72.5%0.410%
5/16/2025 Teza Capital Management LLC10,244$309K0.1%+20.2%0.006%
5/16/2025 Millennium Management LLC635,370$19.17M0.0%-17.9%0.399%
5/16/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.8,206$256K0.0%-13.2%0.005%
5/16/2025 Edmond DE Rothschild Holding S.A.124,200$3.75M0.1%N/A0.078%
5/16/2025 BVF Inc. IL1,913,385$57.73M2.4%N/A1.202%
5/16/2025 Allostery Investments LP35,000$1.06M1.5%-46.2%0.022%
5/16/2025 Ancora Advisors LLC2,000$60K0.0%N/A0.001%
5/16/2025 Adage Capital Partners GP L.L.C.1,075,600$32.45M0.1%+291.1%0.676%
5/15/2025 Baker BROS. Advisors LP357,915$10.80M0.1%-98.8%0.225%
5/15/2025 PDT Partners LLC96,056$2.90M0.2%+231.3%0.060%
5/15/2025 Alpine Global Management LLC28,097$848K0.2%N/A0.018%
5/15/2025 Quarry LP3,000$91K0.0%-50.0%0.002%
5/15/2025 Tema Etfs LLC25,141$759K0.2%-55.8%0.016%
5/15/2025 Orion Investment Co215,290$6.50M2.7%-0.3%0.135%
5/14/2025 Rafferty Asset Management LLC176,248$5.32M0.0%-25.7%0.111%
5/14/2025 FORA Capital LLC11,570$349K0.0%N/A0.007%
5/14/2025 Comerica Bank1,320$40K0.0%-82.1%0.001%
5/14/2025 Jump Financial LLC81,321$2.45M0.0%+104.6%0.051%
5/14/2025 Northwestern Mutual Wealth Management Co.12,358$373K0.0%+9.1%0.008%
5/14/2025 Price T Rowe Associates Inc. MD3,265,034$98.51M0.0%-14.7%2.051%
5/14/2025 Candriam S.C.A.993,704$29.98M0.2%+16.9%0.624%
5/14/2025 T. Rowe Price Investment Management Inc.16,175,533$488.02M0.3%+14.2%10.163%
5/14/2025 Capital Fund Management S.A.58,014$1.75M0.0%N/A0.036%
5/14/2025 Groupama Asset Managment1,069,211$32.26M0.3%+5.1%0.672%
5/14/2025 Hsbc Holdings PLC74,833$2.22M0.0%-9.9%0.047%
5/13/2025 Northern Trust Corp834,847$25.19M0.0%-0.6%0.525%
5/13/2025 Raymond James Financial Inc.148,690$4.49M0.0%+40.8%0.093%
5/13/2025 Tocqueville Asset Management L.P.187,395$5.65M0.1%-46.8%0.118%
5/13/2025 American Century Companies Inc.116,768$3.52M0.0%N/A0.073%
5/13/2025 Sector Gamma AS285,842$8.62M2.8%+21.2%0.180%
5/13/2025 Aberdeen Group plc446,197$13.50M0.0%+11.1%0.280%
5/13/2025 Liontrust Investment Partners LLP30,390$917K0.0%-27.0%0.019%
5/13/2025 E Fund Management Co. Ltd.16,471$497K0.0%-2.4%0.010%
5/12/2025 Connor Clark & Lunn Investment Management Ltd.129,273$3.90M0.0%+3.1%0.081%
5/12/2025 Swiss National Bank275,300$8.31M0.0%-1.4%0.173%
5/12/2025 Mitsubishi UFJ Asset Management Co. Ltd.6,135$185K0.0%+8.5%0.004%
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5/9/2025 Charles Schwab Investment Management Inc.1,443,629$43.55M0.0%-2.6%0.907%
5/9/2025 Vanguard Group Inc.16,383,934$494.30M0.0%-0.5%10.294%
5/9/2025 IQ EQ FUND MANAGEMENT IRELAND Ltd8,059$243K0.0%N/A0.005%
5/9/2025 Raiffeisen Bank International AG41,754$1.30M0.0%+2,280.5%0.026%
5/9/2025 Blair William & Co. IL38,381$1.16M0.0%-3.8%0.024%
5/9/2025 Privium Fund Management B.V.267,594$8.07M2.1%+0.3%0.168%
5/8/2025 Commerce Bank7,275$219K0.0%-46.4%0.005%
5/8/2025Jefferies Financial Group Inc.22,841$689K0.0%-99.2%0.014%
5/8/2025 XTX Topco Ltd12,404$374K0.0%-51.1%0.008%
5/7/2025 ARK Investment Management LLC1,000,527$30.19M0.3%-2.4%0.629%
5/7/2025 TD Asset Management Inc1,100,466$33.20M0.0%+4.8%0.691%
5/7/2025 Nikko Asset Management Americas Inc.142,433$4.30M0.1%-9.1%0.089%
5/6/2025 Pinnacle Associates Ltd.608,517$18.36M0.3%+11.1%0.383%
5/6/2025 Readystate Asset Management LP46,394$1.40M0.0%-99.6%0.029%
5/6/2025 KLP Kapitalforvaltning AS27,400$827K0.0%-6.2%0.017%
5/5/2025 GW&K Investment Management LLC182,309$5.50M0.1%-2.6%0.115%
5/5/2025 Private Advisor Group LLC34,531$1.04M0.0%-15.1%0.022%
5/2/2025 Grandfield & Dodd LLC37,761$1.14M0.1%+5.2%0.024%
5/2/2025 Victory Capital Management Inc.18,641$562K0.0%+3.5%0.012%
5/2/2025 Signaturefd LLC1,382$42K0.0%+45.6%0.001%
5/1/2025 Bleakley Financial Group LLC22,284$672K0.0%+31.5%0.014%
5/1/2025 CWM LLC2,435$73K0.0%+18.7%0.002%
5/1/2025 Westmount Partners LLC12,961$391K0.1%-3.7%0.008%
5/1/2025 Arizona State Retirement System40,687$1.23M0.0%-1.1%0.026%
5/1/2025 Xponance Inc.20,319$613K0.0%+5.1%0.013%
4/30/2025 Significant Wealth Partners LLC13,605$410K0.2%+24.8%0.009%
4/30/2025 Brown Advisory Inc.12,026$363K0.0%-5.5%0.008%
4/30/2025 China Universal Asset Management Co. Ltd.31,886$962K0.1%-4.8%0.020%
4/29/2025 Envestnet Asset Management Inc.15,039$454K0.0%-71.5%0.009%
4/29/2025 GF Fund Management CO. LTD.4,042$122K0.0%+21.9%0.003%
4/28/2025 Principal Financial Group Inc.10,447$315K0.0%-23.3%0.007%
4/28/2025 Teacher Retirement System of Texas500,451$15.10M0.1%+660.7%0.315%
4/28/2025 DAVENPORT & Co LLC56,393$1.70M0.0%-10.1%0.035%
4/25/2025 Sovran Advisors LLC328,904$9.34M1.2%+91.4%0.207%
4/25/2025 Sumitomo Mitsui Trust Group Inc.142,433$4.30M0.0%-9.1%0.090%
4/22/2025 Moisand Fitzgerald Tamayo LLC5,000$151K0.0%N/A0.003%
4/17/2025 Exchange Traded Concepts LLC3,244$98K0.0%+1,722.5%0.002%
4/15/2025 Fifth Third Bancorp9,989$301K0.0%+4.8%0.006%
4/15/2025 Handelsbanken Fonder AB43,211$1.30M0.0%-1.4%0.027%
4/15/2025 SG Americas Securities LLC20,050$605K0.0%-16.2%0.013%
4/8/2025 Rhumbline Advisers188,216$5.68M0.0%-1.9%0.118%
4/7/2025 GAMMA Investing LLC28,993$961K0.0%+3,786.5%0.018%
3/18/2025 California State Teachers Retirement System133,902$4.68M0.0%+6.1%0.084%
2/19/2025 GF Fund Management CO. LTD.3,315$116K0.0%N/A0.002%
2/19/2025 Public Employees Retirement System of Ohio53,748$1.88M0.0%-5.4%0.034%
2/17/2025 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC619,641$21.66M0.0%-40.8%0.392%
2/17/2025 Voloridge Investment Management LLC316,943$11.08M0.0%-16.7%0.201%
2/17/2025 Woodline Partners LP107,610$3.76M0.0%N/A0.068%
2/17/2025 Vestal Point Capital LP595,000$20.80M1.2%N/A0.377%
2/17/2025 Two Sigma Advisers LP1,349,211$47.17M0.1%+1.3%0.854%
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2/17/2025 Two Sigma Investments LP921,439$32.21M0.1%+0.3%0.584%
2/17/2025 Tidal Investments LLC17,407$609K0.0%-7.9%0.011%
2/17/2025 Teza Capital Management LLC8,525$298K0.0%-19.6%0.005%
2/17/2025 Tanaka Capital Management Inc.6,892$241K0.6%-52.5%0.004%
2/17/2025 Tema Etfs LLC56,844$1.99M0.8%N/A0.036%
2/17/2025 Silvercrest Asset Management Group LLC6,617$231K0.0%N/A0.004%
2/17/2025 Rafferty Asset Management LLC237,337$8.30M0.0%+19.4%0.150%
2/17/2025 Raiffeisen Bank International AG1,754$62K0.0%N/A0.001%
2/17/2025 ProShare Advisors LLC7,480$262K0.0%-13.4%0.005%
2/17/2025Nuveen Asset Management LLC290,954$10.17M0.0%-96.9%0.184%
(Data available from 1/1/2016 forward)

IONS Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of IONS shares?

During the previous two years, 300 institutional investors and hedge funds held shares of Ionis Pharmaceuticals. The most heavily invested institutionals were FMR LLC ($975.19M), Vanguard Group Inc. ($494.30M), T. Rowe Price Investment Management Inc. ($488.02M), Capital World Investors ($400.83M), Bellevue Group AG ($275.09M), Wellington Management Group LLP ($233.57M), and Tweedy Browne Co LLC ($113.58M).Learn more on IONS's institutional investors.

What percentage of Ionis Pharmaceuticals stock is owned by institutional investors?

93.86% of Ionis Pharmaceuticals stock is owned by institutional investors. Learn more on IONS's institutional investor holdings.

Which institutional investors have been buying Ionis Pharmaceuticals stock?

Of the 228 institutional investors that purchased Ionis Pharmaceuticals stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Capital World Investors ($4.48M), Wellington Management Group LLP ($3.70M), Norges Bank ($2.89M), BVF Inc. IL ($2.20M), T. Rowe Price Investment Management Inc. ($2.01M), Adage Capital Partners GP L.L.C. ($1.87M), and Vanguard Group Inc. ($1.42M).

How much institutional buying is happening at Ionis Pharmaceuticals?

Institutional investors have bought a total of 32,705,868 shares in the last 24 months. This purchase volume represents approximately $1.28B in transactions.

Which Ionis Pharmaceuticals major shareholders have been selling company stock?

Of the 162 institutional investors that sold Ionis Pharmaceuticals stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Baker BROS. Advisors LP ($30M), Readystate Asset Management LP ($11.95M), Nuveen Asset Management LLC ($9.01M), Schroder Investment Management Group ($4.83M), Clearbridge Investments LLC ($3.32M), Jefferies Financial Group Inc. ($2.70M), and Jump Financial LLC ($2.02M).

How much institutional selling is happening at Ionis Pharmaceuticals?

Institutional investors have sold a total of 85,391,923 shares in the last 24 months. This volume of shares sold represents approximately $2.95B in transactions.


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This page (NASDAQ:IONS) was last updated on 5/21/2025 by MarketBeat.com Staff
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