1,010 hedge funds and large institutions have $37.6B invested in Biogen in 2019 Q2 according to their latest regulatory filings, with 84 funds opening new positions, 317 increasing their positions, 451 reducing their positions, and 142 closing their positions.

New
Increased
Maintained
Reduced
Closed

less ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

less call options, than puts

Call options by funds: $ | Put options by funds: $

27% less funds holding in top 10

Funds holding in top 10: 2216 (-6)

30% less repeat investments, than reductions

Existing positions increased: 317 | Existing positions reduced: 451

41% less first-time investments, than exits

New positions opened: 84 | Existing positions closed: 142

Holders
1,010
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
16
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$883M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
901
$38K
902
$38K
903
$37K
904
$37K
905
$36K
906
$35K
907
$35K
908
$35K
909
$35K
910
$33K
911
$30K
912
$30K
913
$30K
914
$29.5K
915
$29K
916
$29K
917
$29K
918
$27K
919
$27K
920
$27K
921
$26K
922
$25K
923
$25K
924
$24K
925
$23K