1,005 hedge funds and large institutions have $29.5B invested in Biogen in 2021 Q4 according to their latest regulatory filings, with 144 funds opening new positions, 293 increasing their positions, 394 reducing their positions, and 153 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

26% less repeat investments, than reductions

Existing positions increased: 293 | Existing positions reduced: 394

27% less funds holding in top 10

Funds holding in top 10: 1511 (-4)

28% less call options, than puts

Call options by funds: $1.1B | Put options by funds: $1.52B

Holders
1,005
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
11
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.1B
Puts
$1.52B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
726
$240K
727
$239K
728
$236K
729
$236K
730
$235K
731
$234K
732
$234K
733
$233K
734
$230K
735
$228K
736
$227K
737
$226K
738
$223K
739
$222K
740
$220K
741
$220K
742
$219K
743
$218K
744
$217K
745
$216K
746
$216K
747
$215K
748
$215K
749
$215K
750
$214K