870 hedge funds and large institutions have $20.2B invested in Biogen in 2024 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 298 increasing their positions, 321 reducing their positions, and 158 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less funds holding

Funds holding:

less call options, than puts

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

18% less first-time investments, than exits

New positions opened: 130 | Existing positions closed: 158

19% less capital invested

Capital invested by funds: $25.1B → $20.2B (-$4.83B)

38% less funds holding in top 10

Funds holding in top 10: 85 (-3)

Holders
870
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
5
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$310M
Puts
$356M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
626
$204K
627
$203K
628
$202K
629
$201K
630
$192K
631
$171K
632
$160K
633
$159K
634
$159K
635
$144K
636
$142K
637
$140K
638
$138K
639
$135K
640
$132K
641
$131K
642
$123K
643
$122K
644
$122K
645
$121K
646
$113K
647
$113K
648
$106K
649
$106K
650
$106K