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
401
$3.79M
402
$3.7M
403
$3.68M
404
$3.67M
405
$3.65M
406
$3.62M
407
$3.61M
408
$3.59M
409
$3.53M
410
$3.53M
411
$3.53M
412
$3.5M
413
$3.45M
414
$3.44M
415
$3.44M
416
$3.44M
417
$3.42M
418
$3.37M
419
$3.37M
420
$3.33M
421
$3.33M
422
$3.33M
423
$3.33M
424
$3.26M
425
$3.23M