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
501
$2.07M
502
$2.05M
503
$2.04M
504
$2.04M
505
$2.02M
506
$2.02M
507
$1.99M
508
$1.98M
509
$1.95M
510
$1.94M
511
$1.94M
512
$1.92M
513
$1.91M
514
$1.91M
515
$1.9M
516
$1.87M
517
$1.84M
518
$1.82M
519
$1.79M
520
$1.78M
521
$1.77M
522
$1.75M
523
$1.74M
524
$1.74M
525
$1.7M