965 hedge funds and large institutions have $90B invested in Biogen in 2015 Q1 according to their latest regulatory filings, with 132 funds opening new positions, 336 increasing their positions, 371 reducing their positions, and 42 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

9% less repeat investments, than reductions

Existing positions increased: 336 | Existing positions reduced: 371

35% less call options, than puts

Call options by funds: $1.06B | Put options by funds: $1.64B

Holders
965
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
68
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.06B
Puts
$1.64B
Net Calls
Net Calls Change

Top Buyers

1 +$951M
2 +$438M
3 +$393M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$301M
5
IC
Institutional Capital
Illinois
+$279M

Top Sellers

1 -$585M
2 -$474M
3 -$258M
4
Goldman Sachs
Goldman Sachs
New York
-$227M
5
Jennison Associates
Jennison Associates
New York
-$221M
Name Holding Trade Value Shares
Change
Change in
Stake
826
$274K
827
$274K
828
$273K
829
$273K
830
$273K
831
$267K
832
$266K
833
$265K
834
$264K
835
$261K
836
$258K
837
$254K
838
$253K
839
$252K
840
$251K
841
$247K
842
$245K
843
$245K
844
$242K
845
$242K
846
$239K
847
$236K
848
$236K
849
$234K
850
$234K