865 hedge funds and large institutions have $20.1B invested in Biogen in 2024 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 294 increasing their positions, 320 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: $24.9B → $20.1B (-$4.83B)

50% less funds holding in top 10

Funds holding in top 10: 84 (-4)

Holders
865
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$308M
Puts
$356M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
501
$358K
502
$355K
503
$353K
504
$353K
505
$352K
506
$350K
507
$349K
508
$349K
509
$349K
510
$344K
511
$343K
512
$337K
513
$331K
514
$329K
515
$329K
516
$328K
517
$321K
518
$320K
519
$319K
520
$319K
521
$317K
522
$314K
523
$312K
524
$311K
525
$310K