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
626
$963K
627
$952K
628
$941K
629
$939K
630
$921K
631
$909K
632
$904K
633
$901K
634
$895K
635
$895K
636
$864K
637
$859K
638
$857K
639
$855K
640
$846K
641
$841K
642
$829K
643
$827K
644
$824K
645
$821K
646
$817K
647
$815K
648
$815K
649
$813K
650
$803K