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
351
$2.57M
352
$2.53M
353
$2.53M
354
$2.52M
355
$2.51M
356
$2.5M
357
$2.45M
358
$2.43M
359
$2.39M
360
$2.38M
361
$2.33M
362
$2.26M
363
$2.25M
364
$2.12M
365
$2.12M
366
$2.12M
367
$2.06M
368
$2.03M
369
$1.97M
370
$1.96M
371
$1.95M
372
$1.95M
373
$1.94M
374
$1.92M
375
$1.92M