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874 hedge funds and large institutions have $20.2B invested in Biogen in 2024 Q4 according to their latest regulatory filings, with 131 funds opening new positions, 300 increasing their positions, 322 reducing their positions, and 159 closing their positions.

New
Increased
Maintained
Reduced
Closed

1.72% more ownership

Funds ownership: 89.11%90.83% (+1.7%)

7% less repeat investments, than reductions

Existing positions increased: 300 | Existing positions reduced: 322

5% less funds holding

Funds holding: 916874 (-42)

13% less call options, than puts

Call options by funds: $310M | Put options by funds: $356M

18% less first-time investments, than exits

New positions opened: 131 | Existing positions closed: 159

19% less capital invested

Capital invested by funds: $25.1B → $20.2B (-$4.84B)

38% less funds holding in top 10

Funds holding in top 10: 85 (-3)

Holders
874
Holders Change
-42
Holders Change %
-4.59%
% of All Funds
11.51%
Holding in Top 10
5
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-37.5%
% of All Funds
0.07%
New
131
Increased
300
Reduced
322
Closed
159
Calls
$310M
Puts
$356M
Net Calls
-$45.6M
Net Calls Change
+$21.7M
Name Holding Trade Value Shares
Change
Change in
Stake
PCFFS
876
Pacific Center for Financial Services
California
$6
RCM
877
RA Capital Management
Massachusetts
-$230M -1,184,456 Closed
Parnassus Investments
878
Parnassus Investments
California
-$70.1M -361,512 Closed
IAIM
879
International Assets Investment Management
Florida
-$1.85K -358,992 Closed
HF
880
HRT Financial
New York
-$17.3M -89,217 Closed
ECM
881
ExodusPoint Capital Management
New York
-$12.2M -62,915 Closed
TC
882
TwinBeech Capital
New York
-$11.9M -61,264 Closed
Adage Capital Partners
883
Adage Capital Partners
Massachusetts
-$8.88M -45,799 Closed
CCM
884
Channing Capital Management
Illinois
-$7.17M -36,974 Closed
OAM
885
Oppenheimer Asset Management
New York
-$6.96M -35,928 Closed
BFIC
886
Bedell Frazier Investment Counselling
California
-$6.07M -31,318 Closed
CP
887
CenterBook Partners
Connecticut
-$5.81M -29,987 Closed
SCM
888
Sarissa Capital Management
Connecticut
-$5.22M -26,950 Closed
ECM
889
Evergreen Capital Management
Washington
-$4.33M -22,354 Closed
AAIM
890
American Assets Investment Management
California
-$3.88M -20,000 Closed
SCM
891
Silverarc Capital Management
Massachusetts
-$3.87M -19,940 Closed
AP
892
Arlington Partners
Alabama
-$3.72M -19,214 Closed
FWIA
893
Fort Washington Investment Advisors
Ohio
-$3.45M -17,814 Closed
Walleye Trading
894
Walleye Trading
New York
-$2.88M -17,102 Closed
EAM
895
Exome Asset Management
New York
-$2.57M -13,317 Closed
GS
896
GTS Securities
New York
-$2.58M -13,294 Closed
TSS
897
Two Sigma Securities
New York
-$1.8M -10,659 Closed
FRM
898
Fox Run Management
Connecticut
-$1.54M -7,922 Closed
OBAM
899
ODDO BHF Asset Management
France
-$1.38M -7,136 Closed
CM
900
Crestline Management
Texas
-$1.31M -6,750 Closed