1,102 hedge funds and large institutions have $43.4B invested in Biogen in 2021 Q2 according to their latest regulatory filings, with 135 funds opening new positions, 324 increasing their positions, 467 reducing their positions, and 110 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

0.17% less ownership

Funds ownership: 83.86%83.69% (-0.17%)

6% less call options, than puts

Call options by funds: $1.8B | Put options by funds: $1.91B

31% less repeat investments, than reductions

Existing positions increased: 324 | Existing positions reduced: 467

Holders
1,102
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
27
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.8B
Puts
$1.91B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
901
$196K
902
$194K
903
$189K
904
$187K
905
$183K
906
$177K
907
$175K
908
$174K
909
$173K
910
$172K
911
$167K
912
$163K
913
$159K
914
$157K
915
$156K
916
$154K
917
$149K
918
$149K
919
$148K
920
$148K
921
$147K
922
$141K
923
$139K
924
$139K
925
$134K