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Biogen
BIIB

Overview Fund Activity

990 hedge funds and large institutions have $33.5B invested in Biogen in 2023 Q4 according to their latest regulatory filings, with 132 funds opening new positions, 283 increasing their positions, 372 reducing their positions, and 81 closing their positions.

Holders
990
Holders Change
+35
Holders Change %
+3.66%
% of All Funds
14.52%
Holding in Top 10
10
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-28.57%
% of All Funds
0.15%
New
132
Increased
283
Reduced
372
Closed
81
Calls
$643M
Puts
$499M
Net Calls
+$144M
Net Calls Change
+$86.4M

Top Buyers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$3.73B
2
Morgan Stanley
2
Morgan Stanley
New York
$817M
3
Invesco
3
Invesco
Georgia
$470M
4
T. Rowe Price Investment Management
4
T. Rowe Price Investment Management
Maryland
$1.39B
5
Fidelity International
5
Fidelity International
Bermuda
$170M

Top Sellers

1
SC
1
Samlyn Capital
New York
$0
2
Fidelity Investments
2
Fidelity Investments
Massachusetts
$259M
3
Renaissance Technologies
3
Renaissance Technologies
New York
$196M
4
AQR Capital Management
4
AQR Capital Management
Connecticut
$9.61M
5
D.E. Shaw & Co
5
D.E. Shaw & Co
New York
$6.19M
Name Market Value Shares Shares
Change 		Shares
Change %
American Century Companies
26
American Century Companies
Missouri
$256M 988,676 +89,748 +10%
First Trust Advisors
27
First Trust Advisors
Illinois
$253M 977,308 +571,795 +141%
Charles Schwab
28
Charles Schwab
California
$220M 849,000 +310 +0%
O
29
OrbiMed
New York
$214M 827,600 +270,800 +49%
Renaissance Technologies
30
Renaissance Technologies
New York
$196M 758,606 -327,791 -30%
Allianz Asset Management
31
Allianz Asset Management
Germany
$186M 718,719 -53,639 -7%
Fidelity International
32
Fidelity International
Bermuda
$170M 656,502 +593,158 +936%
SCM
33
Sarissa Capital Management
Connecticut
$166M 643,000 – –
Massachusetts Financial Services
34
Massachusetts Financial Services
Massachusetts
$150M 580,065 +133,463 +30%
RCM
35
RA Capital Management
Massachusetts
$138M 532,892 – –
Barclays
36
Barclays
United Kingdom
$138M 532,260 +136,584 +35%
Franklin Resources
37
Franklin Resources
California
$129M 498,349 -130,185 -21%
Swiss National Bank
38
Swiss National Bank
Switzerland
$117M 452,900 -12,700 -3%
Axa
39
Axa
France
$117M 450,743 +9,494 +2%
BNP Paribas Asset Management
40
BNP Paribas Asset Management
France
$116M 448,432 -212,114 -32%
Nuveen Asset Management
41
Nuveen Asset Management
Illinois
$116M 447,150 -135,603 -23%
Aberdeen Group
42
Aberdeen Group
United Kingdom
$113M 437,075 +307,532 +237%
Bank of America
43
Bank of America
North Carolina
$110M 426,574 +72,481 +20%
Alyeska Investment Group
44
Alyeska Investment Group
Illinois
$109M 422,680 -19,396 -4%
TD Asset Management
45
TD Asset Management
Ontario, Canada
$101M 389,984 +108,956 +39%
Sumitomo Mitsui Trust Group
46
Sumitomo Mitsui Trust Group
Japan
$99.1M 383,102 +4,593 +1%
PAI
47
Palo Alto Investors
California
$98.4M 380,417 -865 -0.2%
Royal Bank of Canada
48
Royal Bank of Canada
Ontario, Canada
$96.8M 374,014 +67,460 +22%
California Public Employees Retirement System
49
California Public Employees Retirement System
California
$94M 363,209 +82,046 +29%
CG
50
Carmignac Gestion
France
$93.5M 361,395 +52,295 +17%
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