999 hedge funds and large institutions have $33.7B invested in Biogen in 2023 Q4 according to their latest regulatory filings, with 133 funds opening new positions, 287 increasing their positions, 374 reducing their positions, and 81 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

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

more funds holding

Funds holding:

more ownership

Funds ownership:

5% more capital invested

Capital invested by funds: $32.1B → $33.7B (+$1.55B)

23% less repeat investments, than reductions

Existing positions increased: 287 | Existing positions reduced: 374

27% less funds holding in top 10

Funds holding in top 10: 1511 (-4)

Holders
999
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
11
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$645M
Puts
$499M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
651
$323K
652
$323K
653
$323K
654
$322K
655
$316K
656
$315K
657
$314K
658
$314K
659
$310K
660
$309K
661
$307K
662
$307K
663
$305K
664
$304K
665
$304K
666
$304K
667
$303K
668
$303K
669
$301K
670
$298K
671
$298K
672
$295K
673
$295K
674
$291K
675
$291K