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
451
$2.87M
452
$2.86M
453
$2.85M
454
$2.83M
455
$2.81M
456
$2.81M
457
$2.76M
458
$2.76M
459
$2.73M
460
$2.69M
461
$2.62M
462
$2.6M
463
$2.59M
464
$2.57M
465
$2.56M
466
$2.45M
467
$2.43M
468
$2.43M
469
$2.41M
470
$2.39M
471
$2.39M
472
$2.38M
473
$2.38M
474
$2.38M
475
$2.37M