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
626
$381K
627
$379K
628
$379K
629
$377K
630
$375K
631
$371K
632
$371K
633
$368K
634
$368K
635
$365K
636
$360K
637
$360K
638
$359K
639
$359K
640
$355K
641
$353K
642
$353K
643
$352K
644
$352K
645
$346K
646
$345K
647
$342K
648
$342K
649
$341K
650
$338K