1,007 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, 294 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: $ → $

25% less repeat investments, than reductions

Existing positions increased: 294 | 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
1,007
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
601
$433K
602
$433K
603
$431K
604
$430K
605
$427K
606
$421K
607
$420K
608
$420K
609
$416K
610
$415K
611
$410K
612
$406K
613
$406K
614
$405K
615
$405K
616
$405K
617
$405K
618
$399K
619
$398K
620
$397K
621
$387K
622
$384K
623
$384K
624
$384K
625
$384K