999 hedge funds and large institutions have $34.9B invested in Biogen in 2023 Q1 according to their latest regulatory filings, with 89 funds opening new positions, 341 increasing their positions, 363 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: 1,029999 (-30)

12% less first-time investments, than exits

New positions opened: 89 | Existing positions closed: 101

24% less funds holding in top 10

Funds holding in top 10: 2519 (-6)

Holders
999
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
$748M
Puts
$674M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
401
$1.59M
402
$1.57M
403
$1.53M
404
$1.48M
405
$1.47M
406
$1.47M
407
$1.47M
408
$1.46M
409
$1.46M
410
$1.44M
411
$1.43M
412
$1.43M
413
$1.42M
414
$1.41M
415
$1.41M
416
$1.4M
417
$1.39M
418
$1.38M
419
$1.36M
420
$1.36M
421
$1.36M
422
$1.34M
423
$1.34M
424
$1.32M
425
$1.3M