1,102 hedge funds and large institutions have $45B invested in Biogen in 2019 Q4 according to their latest regulatory filings, with 204 funds opening new positions, 272 increasing their positions, 470 reducing their positions, and 69 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.64% less ownership

Funds ownership: 86.84%84.2% (-2.6%)

30% less call options, than puts

Call options by funds: $1.27B | Put options by funds: $1.82B

42% less repeat investments, than reductions

Existing positions increased: 272 | Existing positions reduced: 470

Holders
1,102
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
31
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.27B
Puts
$1.82B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
751
$369K
752
$367K
753
$366K
754
$366K
755
$363K
756
$361K
757
$359K
758
$359K
759
$357K
760
$356K
761
$356K
762
$354K
763
$353K
764
$352K
765
$347K
766
$343K
767
$341K
768
$341K
769
$338K
770
$334K
771
$332K
772
$330K
773
$329K
774
$326K
775
$326K