973 hedge funds and large institutions have $85.3B invested in Biogen in 2015 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 367 increasing their positions, 348 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
973
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.21B
Puts
$1.72B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
476
$2.83M
477
$2.78M
478
$2.73M
479
$2.71M
480
$2.71M
481
$2.7M
482
$2.68M
483
$2.63M
484
$2.63M
485
$2.6M
486
$2.57M
487
$2.57M
488
$2.56M
489
$2.51M
490
$2.48M
491
$2.46M
492
$2.42M
493
$2.38M
494
$2.38M
495
$2.38M
496
$2.36M
497
$2.35M
498
$2.35M
499
$2.33M
500
$2.26M