994 hedge funds and large institutions have $34.8B invested in Biogen in 2023 Q1 according to their latest regulatory filings, with 87 funds opening new positions, 340 increasing their positions, 362 reducing their positions, and 101 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more ownership

Funds ownership:

more capital invested

Capital invested by funds: $ → $

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

3% less funds holding

Funds holding: 1,026994 (-32)

14% less first-time investments, than exits

New positions opened: 87 | Existing positions closed: 101

21% less funds holding in top 10

Funds holding in top 10: 2419 (-5)

Holders
994
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
19
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$744M
Puts
$674M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
401
$1.53M
402
$1.48M
403
$1.47M
404
$1.47M
405
$1.47M
406
$1.46M
407
$1.46M
408
$1.44M
409
$1.43M
410
$1.43M
411
$1.42M
412
$1.41M
413
$1.41M
414
$1.4M
415
$1.39M
416
$1.38M
417
$1.36M
418
$1.36M
419
$1.36M
420
$1.34M
421
$1.34M
422
$1.32M
423
$1.3M
424
$1.27M
425
$1.26M