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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 %
DnB Asset Management
151
DnB Asset Management
Norway
$14.4M 55,464 -14,048 -20%
Two Sigma Investments
152
Two Sigma Investments
New York
$14M 54,025 +34,511 +177%
CLGM
153
Capitolis Liquid Global Markets
New York
$14M 54,000 +54,000 New
AIG
154
American International Group
New York
$13.4M 51,969 -613 -1%
Stifel Financial
155
Stifel Financial
Missouri
$13.4M 51,648 -4,079 -7%
KBC Group
156
KBC Group
Belgium
$13.2M 50,836 +2,358 +5%
IG
157
ING Group
Netherlands
$12.8M 49,492 +516 +1%
Baird Financial Group
158
Baird Financial Group
Wisconsin
$12.7M 49,269 +317 +0.6%
FMI
159
Factory Mutual Insurance
Massachusetts
$12.7M 49,200 – –
IMRF
160
Illinois Municipal Retirement Fund
Illinois
$12.7M 49,117 -19,274 -28%
UM
161
UniSuper Management
Australia
$12.5M 48,218 -854 -2%
EDRH
162
Edmond de Rothschild Holding
Switzerland
$12.5M 48,133 -12 -0%
GIA
163
Gateway Investment Advisers
Ohio
$12.1M 46,939 -5,897 -11%
SFM
164
Sphera Funds Management
Israel
$12M 46,346 +20,500 +79%
TLP
165
Tri Locum Partners
New York
$11.9M 45,814 +45,814 New
GC
166
Grimes & Company
Massachusetts
$11.7M 45,199 +629 +1%
LPL Financial
167
LPL Financial
California
$11.7M 45,070 -5,740 -11%
CANY
168
Caxton Associates (New York)
New York
$11.6M 45,000 +45,000 New
AGA
169
Altrinsic Global Advisors
Connecticut
$11.5M 44,551 -2,610 -6%
ATN
170
AMF Tjänstepension
Sweden
$11.3M 43,849 – –
Assenagon Asset Management
171
Assenagon Asset Management
Luxembourg
$11.2M 43,216 -86,525 -67%
Truist Financial
172
Truist Financial
North Carolina
$10.8M 41,915 -9,681 -19%
AP
173
Atwood & Palmer
Missouri
$10.8M 41,596 -40 -0.1%
Comerica Bank
174
Comerica Bank
Texas
$10.6M 41,104 +3,025 +8%
Two Sigma Advisers
175
Two Sigma Advisers
New York
$10.6M 41,100 -11,800 -22%
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