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
801
$243K
802
$239K
803
$237K
804
$236K
805
$235K
806
$234K
807
$234K
808
$233K
809
$231K
810
$230K
811
$229K
812
$229K
813
$229K
814
$229K
815
$228K
816
$226K
817
$226K
818
$225K
819
$225K
820
$224K
821
$222K
822
$221K
823
$218K
824
$217K
825
$217K