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
526
$1.83M
527
$1.82M
528
$1.82M
529
$1.81M
530
$1.81M
531
$1.81M
532
$1.77M
533
$1.77M
534
$1.76M
535
$1.73M
536
$1.73M
537
$1.72M
538
$1.71M
539
$1.7M
540
$1.7M
541
$1.65M
542
$1.62M
543
$1.61M
544
$1.61M
545
$1.6M
546
$1.59M
547
$1.58M
548
$1.56M
549
$1.55M
550
$1.55M