1,084 hedge funds and large institutions have $40.6B invested in Biogen in 2019 Q1 according to their latest regulatory filings, with 119 funds opening new positions, 389 increasing their positions, 437 reducing their positions, and 164 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less funds holding

Funds holding:

less call options, than puts

Call options by funds: $ | Put options by funds: $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

22% less capital invested

Capital invested by funds: $52.2B → $40.6B (-$11.6B)

24% less funds holding in top 10

Funds holding in top 10: 2922 (-7)

27% less first-time investments, than exits

New positions opened: 119 | Existing positions closed: 164

Holders
1,084
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
22
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.15B
Puts
$1.28B
Net Calls
Net Calls Change

Top Buyers

1 +$250M
2 +$210M
3 +$206M
4
Boston Partners
Boston Partners
Massachusetts
+$177M
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$154M

Top Sellers

1 -$382M
2 -$265M
3 -$208M
4
VOYA Investment Management
VOYA Investment Management
Georgia
-$192M
5
O
OrbiMed
New York
-$177M
Name Holding Trade Value Shares
Change
Change in
Stake
726
$392K
727
$381K
728
$381K
729
$378K
730
$378K
731
$374K
732
$373K
733
$370K
734
$369K
735
$366K
736
$366K
737
$363K
738
$359K
739
$355K
740
$355K
741
$355K
742
$355K
743
$355K
744
$343K
745
$343K
746
$337K
747
$335K
748
$335K
749
$332K
750
$331K