1,083 hedge funds and large institutions have $40.6B invested in Biogen in 2019 Q1 according to their latest regulatory filings, with 118 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 (-$11.7B)

24% less funds holding in top 10

Funds holding in top 10: 2922 (-7)

28% less first-time investments, than exits

New positions opened: 118 | Existing positions closed: 164

Holders
1,083
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
601
$745K
602
$737K
603
$731K
604
$727K
605
$719K
606
$718K
607
$716K
608
$716K
609
$712K
610
$711K
611
$707K
612
$699K
613
$697K
614
$687K
615
$676K
616
$676K
617
$671K
618
$665K
619
$665K
620
$662K
621
$661K
622
$653K
623
$650K
624
$648K
625
$645K