1,059 hedge funds and large institutions have $31.7B invested in Biogen in 2020 Q4 according to their latest regulatory filings, with 170 funds opening new positions, 289 increasing their positions, 431 reducing their positions, and 148 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

more funds holding

Funds holding:

15% less capital invested

Capital invested by funds: $37.2B → $31.7B (-$5.44B)

33% less repeat investments, than reductions

Existing positions increased: 289 | Existing positions reduced: 431

61% less funds holding in top 10

Funds holding in top 10: 187 (-11)

Holders
1,059
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.98B
Puts
$1.64B
Net Calls
Net Calls Change

Top Sellers

1 -$309M
2 -$269M
3 -$201M
4
State Street
State Street
Massachusetts
-$137M
5
Vanguard Group
Vanguard Group
Pennsylvania
-$116M
Name Holding Trade Value Shares
Change
Change in
Stake
776
$267K
777
$265K
778
$264K
779
$262K
780
$262K
781
$260K
782
$260K
783
$259K
784
$258K
785
$257K
786
$257K
787
$254K
788
$252K
789
$251K
790
$250K
791
$250K
792
$249K
793
$249K
794
$248K
795
$248K
796
$247K
797
$247K
798
$246K
799
$246K
800
$245K