1,100 hedge funds and large institutions have $51.4B invested in Biogen in 2018 Q1 according to their latest regulatory filings, with 94 funds opening new positions, 424 increasing their positions, 416 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

7% less funds holding in top 10

Funds holding in top 10: 2826 (-2)

14% less capital invested

Capital invested by funds: $60B → $51.4B (-$8.57B)

34% less call options, than puts

Call options by funds: $695M | Put options by funds: $1.05B

Holders
1,100
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$695M
Puts
$1.05B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
701
$601K
702
$601K
703
$595K
704
$586K
705
$584K
706
$583K
707
$583K
708
$575K
709
$574K
710
$571K
711
$569K
712
$564K
713
$563K
714
$561K
715
$558K
716
$557K
717
$556K
718
$552K
719
$549K
720
$548K
721
$548K
722
$547K
723
$542K
724
$541K
725
$540K