Institutional Ownership Biogen Inc. (BIIB)
This table provides information about the institutional ownership of Biogen Inc. (BIIB). We have compiled data on the 1,018 institutions that hold shares in the stock, with a total of 131 Million shares, which have been reported (via 13F filing form) to have a value of $18.8 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Prudential Financial Inc
Newark, NJ |
Aug 12, 2025 Q2 2025 |
387,829
shares
|
$55.7 Million
0.07% of portfolio
|
Q2 2025
Reduced 7.8%
|
|
|
Nuveen, LLC
Charlotte, NC |
Aug 12, 2025 Q2 2025 |
341,659
shares
|
$49.1 Million
0.01% of portfolio
|
Q2 2025
Added 133.32%
|
|
|
California Public Employees Retirement System
Sacramento, CA |
Aug 13, 2025 Q2 2025 |
339,050
shares
|
$48.7 Million
0.03% of portfolio
|
Q2 2025
Reduced 11.96%
|
|
|
Thompson Siegel & Walmsley LLC
|
Aug 06, 2025 Q2 2025 |
323,018
shares
|
$46.4 Million
0.67% of portfolio
|
Q2 2025
Added 25.47%
|
|
|
Patient Capital Management, LLC
Baltimore, MD |
Aug 13, 2025 Q2 2025 |
320,466
shares
|
$46 Million
2.12% of portfolio
|
Q2 2025
Reduced 29.66%
|
|
|
Nuveen Asset Management, LLC
Chicago, IL |
Feb 14, 2025 Q4 2024 |
300,741
shares
|
$43.2 Million
0.01% of portfolio
|
Q4 2024
Reduced 6.95%
|
|
|
Rhumbline Advisers
Boston, MA |
Aug 12, 2025 Q2 2025 |
300,147
shares
|
$43.1 Million
0.03% of portfolio
|
Q2 2025
Added 1.3%
|
|
|
Mitsubishi Ufj Kokusai Asset Management Co., Ltd.
|
Aug 07, 2025 Q2 2025 |
294,269
shares
|
$42.3 Million
0.03% of portfolio
|
Q2 2025
Added 7.57%
|
|
|
Credit Suisse Ag
Zurich, V8 |
May 10, 2024 Q1 2024 |
291,725
shares
|
$41.9 Million
0.06% of portfolio
|
Q1 2024
Reduced 8.38%
|
|
|
State Of Michigan Retirement System
|
Aug 05, 2025 Q2 2025 |
291,303
shares
|
$41.8 Million
0.19% of portfolio
|
Q2 2025
Added 633.71%
|
|
|
Ken Fisher
Fisher Asset Management, LLC | Camas, Wa
|
Aug 13, 2025 Q2 2025 |
289,137
shares
|
$41.5 Million
0.01% of portfolio
|
Q2 2025
Reduced 3.31%
|
|
|
National Pension Service
Jeonju Si, Jeollabuk Do, M5 |
Aug 07, 2025 Q2 2025 |
273,055
shares
|
$39.2 Million
0.03% of portfolio
|
Q2 2025
Added 0.58%
|
|
|
Hudson Bay Capital Management LP
Greenwich, CT |
Aug 18, 2025 Q2 2025 |
267,740
shares
|
$38.4 Million
0.13% of portfolio
|
Q2 2025
Added 33.52%
|
|
|
Canada Pension Plan Investment Board
Toronto Ontario, A6 |
Aug 14, 2025 Q2 2025 |
255,183
shares
|
$36.6 Million
0.03% of portfolio
|
Q2 2025
Added 10.56%
|
|
|
Lsv Asset Management
Chicago, IL |
Aug 11, 2025 Q2 2025 |
251,959
shares
|
$36.2 Million
0.08% of portfolio
|
Q2 2025
Added 4.13%
|
|
|
Tekla Capital Management LLC
|
Aug 10, 2023 Q2 2023 |
247,943
shares
|
$35.6 Million
2.79% of portfolio
|
Q2 2023
Added 2.91%
|
|
|
Adage Capital Partners Gp, L.L.C.
Boston, MA |
Aug 14, 2025 Q2 2025 |
247,937
shares
|
$35.6 Million
0.06% of portfolio
|
Q2 2025
Added 250.36%
|
|
|
Fil LTD
Hamilton, D0 |
Aug 14, 2025 Q2 2025 |
244,332
shares
|
$35.1 Million
0.03% of portfolio
|
Q2 2025
Added 103.61%
|
|
|
Russell Investments Group, Ltd.
|
Aug 13, 2025 Q2 2025 |
242,053
shares
|
$34.8 Million
0.04% of portfolio
|
Q2 2025
Added 16.57%
|
|
|
California State Teachers Retirement System
West Sacramento, CA |
Aug 14, 2025 Q2 2025 |
238,691
shares
|
$34.3 Million
0.03% of portfolio
|
Q2 2025
Added 3.54%
|
|
|
Pro Share Advisors LLC
|
Aug 07, 2025 Q2 2025 |
238,558
shares
|
$34.3 Million
0.06% of portfolio
|
Q2 2025
Added 6.19%
|
|
|
Alliancebernstein L.P.
New York, NY |
Aug 14, 2025 Q2 2025 |
231,108
shares
|
$33.2 Million
0.01% of portfolio
|
Q2 2025
Added 0.9%
|
|
|
Pictet Asset Management Holding Sa
Carouge, V8 |
Aug 13, 2025 Q2 2025 |
229,342
shares
|
$32.9 Million
0.03% of portfolio
|
Q2 2025
Added 5.43%
|
|
|
Franklin Resources Inc
San Mateo, CA |
Aug 12, 2025 Q2 2025 |
229,010
shares
|
$32.9 Million
0.01% of portfolio
|
Q2 2025
Reduced 61.06%
|
|
|
Citigroup Inc
|
Aug 11, 2025 Q2 2025 |
223,240
shares
|
$32.1 Million
0.01% of portfolio
|
Q2 2025
Reduced 26.23%
|