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
776
$190K
777
$184K
778
$184K
779
$182K
780
$182K
781
$178K
782
$175K
783
$175K
784
$171K
785
$166K
786
$165K
787
$156K
788
$155K
789
$153K
790
$151K
791
$148K
792
$146K
793
$144K
794
$144K
795
$139K
796
$135K
797
$133K
798
$131K
799
$130K
800
$123K