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Biogen
BIIB

Overview Fund Activity

1,098 hedge funds and large institutions have $43.4B invested in Biogen in 2021 Q2 according to their latest regulatory filings, with 134 funds opening new positions, 321 increasing their positions, 467 reducing their positions, and 110 closing their positions.

Holders
1,098
Holders Change
+9
Holders Change %
+0.83%
% of All Funds
19.17%
Holding in Top 10
27
Holding in Top 10 Change
+14
Holding in Top 10 Change %
+107.69%
% of All Funds
0.47%
New
134
Increased
321
Reduced
467
Closed
110
Calls
$1.8B
Puts
$1.91B
Net Calls
-$111M
Net Calls Change
-$185M

Top Buyers

1
JPMorgan Chase & Co
1
JPMorgan Chase & Co
New York
$1.85B
2
Marshall Wace
2
Marshall Wace
United Kingdom
$226M
3
SC
3
Samlyn Capital
New York
$130M
4
Citadel Advisors
4
Citadel Advisors
Florida
$193M
5
HM
5
HealthCor Management
New York
$117M

Top Sellers

1
Renaissance Technologies
1
Renaissance Technologies
New York
$461M
2
Fidelity Investments
2
Fidelity Investments
Massachusetts
$468M
3
LSV Asset Management
3
LSV Asset Management
Illinois
$125M
4
Berkshire Hathaway
4
Berkshire Hathaway
Nebraska
$0
5
AQR Capital Management
5
AQR Capital Management
Connecticut
$178M
Name Market Value Shares Shares
Change 		Shares
Change %
Morgan Stanley
26
Morgan Stanley
New York
$243M 702,175 +84,388 +14%
Bank of America
27
Bank of America
North Carolina
$240M 692,251 -125,515 -15%
PPA
28
Parametric Portfolio Associates
Washington
$237M 684,964 +22,666 +3%
Marshall Wace
29
Marshall Wace
United Kingdom
$226M 651,320 +488,764 +301%
SCM
30
Sarissa Capital Management
Connecticut
$223M 643,000 – –
Swiss National Bank
31
Swiss National Bank
Switzerland
$215M 621,072 +29,314 +5%
Amundi
32
Amundi
France
$215M 619,698 +619,698 New
VanEck Associates
33
VanEck Associates
New York
$207M 596,547 -27,497 -4%
Citadel Advisors
34
Citadel Advisors
Florida
$193M 556,889 +333,326 +149%
Wells Fargo
35
Wells Fargo
California
$190M 549,636 -31,100 -5%
BG
36
Bellevue Group
Switzerland
$183M 528,100 -30,300 -5%
AQR Capital Management
37
AQR Capital Management
Connecticut
$178M 514,462 -510,943 -50%
Sumitomo Mitsui Trust Group
38
Sumitomo Mitsui Trust Group
Japan
$171M 494,725 -37,667 -7%
California Public Employees Retirement System
39
California Public Employees Retirement System
California
$164M 473,506 +100,803 +27%
Franklin Resources
40
Franklin Resources
California
$163M 471,300 -58,979 -11%
Parnassus Investments
41
Parnassus Investments
California
$157M 452,053 +137,641 +44%
Nordea Investment Management
42
Nordea Investment Management
Sweden
$154M 444,999 -68,522 -13%
First Trust Advisors
43
First Trust Advisors
Illinois
$150M 432,106 +10,447 +2%
Royal Bank of Canada
44
Royal Bank of Canada
Ontario, Canada
$134M 387,868 +36,132 +10%
Susquehanna International Group
45
Susquehanna International Group
Pennsylvania
$131M 377,310 +116,668 +45%
SC
46
Samlyn Capital
New York
$130M 376,231 +376,231 New
AC
47
Armistice Capital
New York
$127M 368,000 +80,000 +28%
PAI
48
Palo Alto Investors
California
$125M 361,600 +18,400 +5%
LSV Asset Management
49
LSV Asset Management
Illinois
$125M 360,170 -557,961 -61%
Assenagon Asset Management
50
Assenagon Asset Management
Luxembourg
$122M 352,079 +88,059 +33%
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