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
751
$321K
752
$320K
753
$319K
754
$317K
755
$312K
756
$312K
757
$312K
758
$312K
759
$312K
760
$306K
761
$304K
762
$296K
763
$295K
764
$292K
765
$291K
766
$289K
767
$287K
768
$286K
769
$286K
770
$285K
771
$283K
772
$283K
773
$283K
774
$280K
775
$279K