1,007 hedge funds and large institutions have $29.5B invested in Biogen in 2021 Q4 according to their latest regulatory filings, with 144 funds opening new positions, 294 increasing their positions, 394 reducing their positions, and 153 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

25% less repeat investments, than reductions

Existing positions increased: 294 | Existing positions reduced: 394

27% less funds holding in top 10

Funds holding in top 10: 1511 (-4)

28% less call options, than puts

Call options by funds: $1.1B | Put options by funds: $1.52B

Holders
1,007
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
$1.1B
Puts
$1.52B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
401
$1.56M
402
$1.56M
403
$1.55M
404
$1.55M
405
$1.49M
406
$1.48M
407
$1.47M
408
$1.45M
409
$1.44M
410
$1.44M
411
$1.41M
412
$1.4M
413
$1.39M
414
$1.38M
415
$1.37M
416
$1.34M
417
$1.33M
418
$1.32M
419
$1.31M
420
$1.3M
421
$1.27M
422
$1.27M
423
$1.27M
424
$1.27M
425
$1.27M