776 hedge funds and large institutions have $66.1B invested in Biogen in 2014 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 284 increasing their positions, 294 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
776
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
33
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$893M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
426
$1.75M
427
$1.74M
428
$1.74M
429
$1.68M
430
$1.68M
431
$1.66M
432
$1.65M
433
$1.62M
434
$1.61M
435
$1.61M
436
$1.6M
437
$1.6M
438
$1.59M
439
$1.57M
440
$1.56M
441
$1.55M
442
$1.53M
443
$1.53M
444
$1.52M
445
$1.5M
446
$1.5M
447
$1.49M
448
$1.49M
449
$1.47M
450
$1.45M