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
676
$565K
677
$557K
678
$557K
679
$551K
680
$548K
681
$544K
682
$539K
683
$538K
684
$537K
685
$526K
686
$516K
687
$515K
688
$511K
689
$509K
690
$506K
691
$503K
692
$501K
693
$490K
694
$490K
695
$484K
696
$479K
697
$478K
698
$478K
699
$475K
700
$474K