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
426
$3.74M
427
$3.74M
428
$3.69M
429
$3.69M
430
$3.64M
431
$3.58M
432
$3.54M
433
$3.51M
434
$3.51M
435
$3.5M
436
$3.48M
437
$3.46M
438
$3.45M
439
$3.44M
440
$3.44M
441
$3.43M
442
$3.39M
443
$3.39M
444
$3.37M
445
$3.37M
446
$3.37M
447
$3.34M
448
$3.33M
449
$3.32M
450
$3.25M