863 hedge funds and large institutions have $20.1B invested in Biogen in 2024 Q4 according to their latest regulatory filings, with 129 funds opening new positions, 293 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: 129 | 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
863
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
401
$667K
402
$664K
403
$657K
404
$654K
405
$653K
406
$651K
407
$646K
408
$640K
409
$639K
410
$632K
411
$622K
412
$614K
413
$613K
414
$612K
415
$610K
416
$604K
417
$604K
418
$602K
419
$597K
420
$596K
421
$591K
422
$589K
423
$582K
424
$581K
425
$578K