947 hedge funds and large institutions have $49.3B invested in Biogen in 2016 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 364 increasing their positions, 350 reducing their positions, and 103 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
947
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
32
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.05B
Puts
$1.13B
Net Calls
Net Calls Change

Top Buyers

1 +$458M
2 +$148M
3 +$114M
4
VAM
Visium Asset Management
New York
+$99.3M
5
Invesco
Invesco
Georgia
+$89.1M
Name Holding Trade Value Shares
Change
Change in
Stake
626
$702K
627
$697K
628
$695K
629
$686K
630
$680K
631
$679K
632
$677K
633
$673K
634
$660K
635
$657K
636
$652K
637
$651K
638
$646K
639
$646K
640
$641K
641
$625K
642
$625K
643
$622K
644
$622K
645
$618K
646
$613K
647
$609K
648
$605K
649
$598K
650
$593K