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
526
$1.4M
527
$1.4M
528
$1.39M
529
$1.38M
530
$1.34M
531
$1.34M
532
$1.34M
533
$1.32M
534
$1.32M
535
$1.31M
536
$1.31M
537
$1.28M
538
$1.28M
539
$1.25M
540
$1.25M
541
$1.24M
542
$1.24M
543
$1.23M
544
$1.23M
545
$1.22M
546
$1.19M
547
$1.19M
548
$1.19M
549
$1.18M
550
$1.18M