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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 %
Jones Financial Companies
976
Jones Financial Companies
Missouri
$1.04K 4 +4 New
TFGT
977
TS Financial Group (TSFG)
Illinois
$1K 5 -4 -44%
TFA
978
Transamerica Financial Advisors
Florida
$1K 1 – –
MFA
979
McClarren Financial Advisors
Pennsylvania
$1K 2 – –
WIA
980
Wetzel Investment Advisors
Indiana
$1K 4 +4 New
TFM
981
TFC Financial Management
Massachusetts
$777 3 -3 -50%
TWD
982
True Wealth Design
Ohio
$777 3 -1 -25%
Kayne Anderson Rudnick Investment Management
983
Kayne Anderson Rudnick Investment Management
California
$776 3 – –
LF
984
Lee Financial
Texas
$518 2 -6 -75%
WA
985
WestEnd Advisors
North Carolina
$518 2 – –
WWM
986
Wolff Wiese Magana
California
$518 2 – –
M
987
MOTCO
Texas
$259 1 -71 -99%
Optiver Holding
988
Optiver Holding
Netherlands
$259 1 +1 New
TAM
989
Tucker Asset Management
Colorado
$259 1 +1 New
CCA
990
Criterion Capital Advisors
Tennessee
$259 1 +1 New
ACA
991
American Capital Advisory
Idaho
– – – –
DWM
992
Dogwood Wealth Management
Kansas
– – – –
SC
993
Samlyn Capital
New York
– – -420,355 Closed
ECM
994
ExodusPoint Capital Management
New York
– – -209,160 Closed
Arrowstreet Capital
995
Arrowstreet Capital
Massachusetts
– – -196,954 Closed
PHS
996
PFM Health Sciences
California
– – -186,635 Closed
APM
997
Avidity Partners Management
Texas
– – -115,400 Closed
BCM
998
Boone Capital Management
Georgia
– – -96,115 Closed
JGC
999
J. Goldman & Co
New York
– – -56,921 Closed
Grantham, Mayo, Van Otterloo & Co (GMO)
1000
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
– – -56,740 Closed
38 39
40
41 42