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
651
$310K
652
$308K
653
$303K
654
$303K
655
$303K
656
$302K
657
$302K
658
$300K
659
$300K
660
$299K
661
$299K
662
$299K
663
$297K
664
$294K
665
$294K
666
$293K
667
$292K
668
$291K
669
$290K
670
$287K
671
$283K
672
$283K
673
$283K
674
$283K
675
$282K