Institutional Ownership Ionis Pharmaceuticals Inc (IONS)
This table provides information about the institutional ownership of Ionis Pharmaceuticals Inc (IONS). We have compiled data on the 413 institutions that hold shares in the stock, with a total of 149 Million shares, which have been reported (via 13F filing form) to have a value of $6.14 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
16,714,846
shares
|
$688 Million
0.01% of portfolio
|
Q2 2025
Added 2.02%
|
|
|
T. Rowe Price Investment Management, Inc.
Baltimore, MD |
Aug 14, 2025 Q2 2025 |
16,048,721
shares
|
$661 Million
0.4% of portfolio
|
Q2 2025
Reduced 0.78%
|
|
|
Capital World Investors
Los Angeles, CA |
Aug 13, 2025 Q2 2025 |
12,540,188
shares
|
$516 Million
0.08% of portfolio
|
Q2 2025
Added 1.44%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
10,321,030
shares
|
$425 Million
0.01% of portfolio
|
Q2 2024
Added 5.62%
|
|
|
Bellevue Group Ag
Kuesnacht, V8 |
Aug 14, 2025 Q2 2025 |
7,853,198
shares
|
$323 Million
7.06% of portfolio
|
Q1 2025
Reduced 0.2%
|
|
|
Wellington Management Group LLP
Boston, MA |
Aug 14, 2025 Q2 2025 |
6,345,776
shares
|
$261 Million
0.05% of portfolio
|
Q2 2025
Reduced 24.6%
|
|
|
Deep Track Capital, LP
Greenwich, CT |
Aug 14, 2025 Q2 2025 |
4,891,544
shares
|
$201 Million
6.86% of portfolio
|
Q2 2025
Added 7.17%
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
4,530,398
shares
|
$187 Million
0.01% of portfolio
|
Q2 2025
Reduced 6.5%
|
|
|
Adage Capital Partners Gp, L.L.C.
Boston, MA |
Aug 14, 2025 Q2 2025 |
3,800,000
shares
|
$156 Million
0.27% of portfolio
|
Q2 2025
Added 253.29%
|
|
|
Price T Rowe Associates Inc
Baltimore, MD |
Aug 14, 2025 Q2 2025 |
3,126,073
shares
|
$129 Million
0.01% of portfolio
|
Q2 2025
Reduced 4.26%
|
|
|
Pictet Asset Management Sa
Geneva 73, V8 |
Aug 10, 2023 Q2 2023 |
3,095,670
shares
|
$127 Million
0.15% of portfolio
|
Q2 2023
Added 178.13%
|
|
|
Tweedy Browne Co.
Tweedy, Browne CO LLC | Stamford, Ct
|
Jul 29, 2025 Q2 2025 |
2,891,948
shares
|
$119 Million
11.3% of portfolio
|
Q2 2025
Reduced 3.07%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
2,891,095
shares
|
$119 Million
0.01% of portfolio
|
Q2 2025
Added 1.69%
|
|
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
Aug 14, 2025 Q2 2025 |
2,667,611
shares
|
$110 Million
0.23% of portfolio
|
Q2 2025
Added 27.51%
|
|
|
Israel Englander
Millennium Management LLC | New York, Ny
|
Aug 14, 2025 Q2 2025 |
2,649,527
shares
|
$109 Million
0.05% of portfolio
|
Q2 2025
Added 317.01%
|
|
|
Bvf Inc
San Francisco, CA |
Aug 14, 2025 Q2 2025 |
1,913,385
shares
|
$78.8 Million
2.97% of portfolio
|
Q1 2025
New holding
|
|
|
Two Sigma Investments, LP
New York, NY |
Aug 14, 2025 Q2 2025 |
1,788,367
shares
|
$73.6 Million
0.14% of portfolio
|
Q2 2025
Added 6.08%
|
|
|
Ubs Group Ag
|
Aug 14, 2025 Q2 2025 |
1,529,323
shares
|
$63 Million
0.01% of portfolio
|
Q2 2025
Reduced 19.11%
|
|
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
Aug 14, 2025 Q2 2025 |
1,494,981
shares
|
$61.6 Million
0.01% of portfolio
|
Q2 2025
Reduced 57.04%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Aug 12, 2025 Q2 2025 |
1,487,818
shares
|
$61.3 Million
0.01% of portfolio
|
Q2 2025
Added 3.06%
|
|
|
Macquarie Group LTD
Australia, C3 |
Aug 14, 2025 Q2 2025 |
1,434,073
shares
|
$59.1 Million
0.07% of portfolio
|
Q2 2025
Reduced 13.98%
|
|
|
Morgan Stanley
New York, NY |
Aug 15, 2025 Q2 2025 |
1,362,209
shares
|
$56.1 Million
0.0% of portfolio
|
Q2 2025
Added 19.06%
|
|
|
Bnp Paribas Asset Management Holding S.A.
|
Aug 05, 2025 Q2 2025 |
1,350,879
shares
|
$55.6 Million
0.13% of portfolio
|
Q2 2025
Added 12.91%
|
|
|
Groupama Asset Managment
Paris, I0 |
Aug 13, 2025 Q2 2025 |
1,160,957
shares
|
$47.8 Million
0.44% of portfolio
|
Q2 2025
Added 8.58%
|
|
|
Td Asset Management Inc
|
Jul 28, 2025 Q2 2025 |
1,104,690
shares
|
$45.5 Million
0.04% of portfolio
|
Q2 2025
Added 0.38%
|