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
426
$578K
427
$574K
428
$568K
429
$552K
430
$552K
431
$551K
432
$547K
433
$546K
434
$541K
435
$541K
436
$540K
437
$530K
438
$526K
439
$526K
440
$514K
441
$510K
442
$508K
443
$501K
444
$500K
445
$496K
446
$491K
447
$489K
448
$485K
449
$481K
450
$479K