923 hedge funds and large institutions have $58.4B invested in Biogen in 2015 Q3 according to their latest regulatory filings, with 105 funds opening new positions, 407 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
923
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
$1.22B
Puts
$1.8B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
476
$2.22M
477
$2.18M
478
$2.17M
479
$2.17M
480
$2.17M
481
$2.16M
482
$2.15M
483
$2.1M
484
$2.06M
485
$2.04M
486
$2.04M
487
$2.04M
488
$2.04M
489
$2M
490
$1.99M
491
$1.98M
492
$1.95M
493
$1.95M
494
$1.95M
495
$1.9M
496
$1.9M
497
$1.9M
498
$1.89M
499
$1.87M
500
$1.86M