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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 %
Parnassus Investments
51
Parnassus Investments
California
$93.3M 360,742 – –
Adage Capital Partners
52
Adage Capital Partners
Massachusetts
$92.1M 355,808 +294,913 +484%
UBS Group
53
UBS Group
Switzerland
$87.6M 338,354 -81,444 -19%
HSBC Holdings
54
HSBC Holdings
United Kingdom
$84.2M 325,608 +52,974 +19%
CS
55
Credit Suisse
Switzerland
$82.4M 318,421 -30,290 -9%
Balyasny Asset Management
56
Balyasny Asset Management
Illinois
$82.1M 317,302 +86,891 +38%
National Pension Service
57
National Pension Service
South Korea
$78.2M 302,317 +6,375 +2%
PCH
58
Polar Capital Holdings
United Kingdom
$77.6M 300,000 – –
Bank of Montreal
59
Bank of Montreal
Ontario, Canada
$76.5M 292,400 +85,557 +41%
Robeco Institutional Asset Management
60
Robeco Institutional Asset Management
Netherlands
$76M 293,540 -48,270 -14%
DekaBank Deutsche Girozentrale
61
DekaBank Deutsche Girozentrale
Germany
$73.4M 283,268 -861 -0.3%
RhumbLine Advisers
62
RhumbLine Advisers
Massachusetts
$72M 278,047 -505 -0.2%
EIP
63
Epoch Investment Partners
New York
$71.7M 277,224 +91,178 +49%
EAM
64
Erste Asset Management
Austria
$71.3M 274,912 +283 +0.1%
Thrivent Financial for Lutherans
65
Thrivent Financial for Lutherans
Minnesota
$67.1M 259,357 -21,290 -8%
Macquarie Group
66
Macquarie Group
Australia
$66M 255,115 -17,992 -7%
Envestnet Asset Management
67
Envestnet Asset Management
Illinois
$61.2M 236,451 -62,600 -21%
Wells Fargo
68
Wells Fargo
California
$59.9M 231,451 +16,778 +8%
AllianceBernstein
69
AllianceBernstein
Tennessee
$59.5M 229,813 -21,691 -9%
California State Teachers Retirement System (CalSTRS)
70
California State Teachers Retirement System (CalSTRS)
California
$58.6M 226,422 +89 +0%
Citigroup
71
Citigroup
New York
$57.1M 220,653 -1,105 -0.5%
National Bank of Canada
72
National Bank of Canada
Quebec, Canada
$53.9M 201,275 +84,284 +72%
Jane Street
73
Jane Street
New York
$53M 204,688 +157,834 +337%
Ameriprise
74
Ameriprise
Minnesota
$52.4M 202,487 -15,878 -7%
AC
75
Armistice Capital
New York
$51.8M 200,000 -76,788 -28%
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