963 hedge funds and large institutions have $32.1B invested in Biogen in 2023 Q3 according to their latest regulatory filings, with 91 funds opening new positions, 334 increasing their positions, 344 reducing their positions, and 118 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

11% less capital invested

Capital invested by funds: $36.1B → $32.1B (-$3.96B)

17% less funds holding in top 10

Funds holding in top 10: 1815 (-3)

23% less first-time investments, than exits

New positions opened: 91 | Existing positions closed: 118

Holders
963
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
15
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$575M
Puts
$517M
Net Calls
Net Calls Change

Top Buyers

1 +$363M
2 +$138M
3 +$80.3M
4
VanEck Associates
VanEck Associates
New York
+$62.6M
5
Macquarie Group
Macquarie Group
Australia
+$55.6M

Top Sellers

1 -$342M
2 -$172M
3 -$154M
4
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$152M
5
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$91.2M
Name Holding Trade Value Shares
Change
Change in
Stake
601
$410K
602
$409K
603
$407K
604
$405K
605
$405K
606
$400K
607
$398K
608
$397K
609
$397K
610
$395K
611
$395K
612
$393K
613
$392K
614
$390K
615
$386K
616
$386K
617
$384K
618
$382K
619
$382K
620
$379K
621
$374K
622
$373K
623
$371K
624
$371K
625
$370K