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
651
$338K
652
$337K
653
$336K
654
$335K
655
$335K
656
$332K
657
$331K
658
$330K
659
$329K
660
$325K
661
$324K
662
$319K
663
$319K
664
$318K
665
$317K
666
$314K
667
$314K
668
$313K
669
$312K
670
$312K
671
$309K
672
$299K
673
$298K
674
$298K
675
$296K