884 hedge funds and large institutions have $72.3B invested in Biogen in 2014 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 343 increasing their positions, 279 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
884
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
$975M
Puts
$1.36B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
626
$568K
627
$564K
628
$563K
629
$562K
630
$560K
631
$559K
632
$557K
633
$553K
634
$552K
635
$549K
636
$543K
637
$541K
638
$539K
639
$538K
640
$536K
641
$535K
642
$534K
643
$533K
644
$530K
645
$528K
646
$524K
647
$522K
648
$522K
649
$520K
650
$516K