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
751
$288K
752
$288K
753
$286K
754
$286K
755
$286K
756
$286K
757
$284K
758
$284K
759
$284K
760
$282K
761
$282K
762
$281K
763
$281K
764
$277K
765
$277K
766
$276K
767
$275K
768
$274K
769
$274K
770
$272K
771
$272K
772
$271K
773
$270K
774
$269K
775
$269K