969 hedge funds and large institutions have $58.9B invested in Biogen in 2015 Q4 according to their latest regulatory filings, with 139 funds opening new positions, 331 increasing their positions, 372 reducing their positions, and 82 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

more capital invested

Capital invested by funds: $ → $

more funds holding in top 10

Funds holding in top 10:

11% less repeat investments, than reductions

Existing positions increased: 331 | Existing positions reduced: 372

24% less call options, than puts

Call options by funds: $1.24B | Put options by funds: $1.63B

Holders
969
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
37
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.24B
Puts
$1.63B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
851
$212K
852
$212K
853
$211K
854
$209K
855
$208K
856
$207K
857
$206K
858
$202K
859
$202K
860
$199K
861
$199K
862
$199K
863
$196K
864
$186K
865
$184K
866
$183K
867
$181K
868
$169K
869
$161K
870
$158K
871
$148K
872
$144K
873
$139K
874
$126K
875
$123K