1,102 hedge funds and large institutions have $43.4B invested in Biogen in 2021 Q2 according to their latest regulatory filings, with 135 funds opening new positions, 324 increasing their positions, 467 reducing their positions, and 110 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

0.17% less ownership

Funds ownership: 83.86%83.69% (-0.17%)

6% less call options, than puts

Call options by funds: $1.8B | Put options by funds: $1.91B

31% less repeat investments, than reductions

Existing positions increased: 324 | Existing positions reduced: 467

Holders
1,102
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
27
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.8B
Puts
$1.91B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
801
$292K
802
$291K
803
$291K
804
$291K
805
$290K
806
$288K
807
$284K
808
$284K
809
$284K
810
$282K
811
$280K
812
$280K
813
$280K
814
$280K
815
$279K
816
$277K
817
$277K
818
$277K
819
$276K
820
$275K
821
$275K
822
$275K
823
$273K
824
$272K
825
$268K