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
651
$695K
652
$693K
653
$683K
654
$679K
655
$674K
656
$674K
657
$672K
658
$667K
659
$666K
660
$663K
661
$632K
662
$621K
663
$620K
664
$619K
665
$618K
666
$616K
667
$614K
668
$613K
669
$612K
670
$610K
671
$596K
672
$594K
673
$586K
674
$574K
675
$567K