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
776
$317K
777
$316K
778
$315K
779
$314K
780
$312K
781
$312K
782
$311K
783
$311K
784
$310K
785
$310K
786
$309K
787
$307K
788
$307K
789
$305K
790
$305K
791
$304K
792
$304K
793
$304K
794
$299K
795
$298K
796
$298K
797
$298K
798
$297K
799
$296K
800
$293K