1,101 hedge funds and large institutions have $45B invested in Biogen in 2019 Q4 according to their latest regulatory filings, with 203 funds opening new positions, 272 increasing their positions, 470 reducing their positions, and 69 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

2.67% less ownership

Funds ownership: 86.84%84.17% (-2.7%)

30% less call options, than puts

Call options by funds: $1.27B | Put options by funds: $1.82B

42% less repeat investments, than reductions

Existing positions increased: 272 | Existing positions reduced: 470

Holders
1,101
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
31
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.27B
Puts
$1.82B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
351
$4.44M
352
$4.43M
353
$4.36M
354
$4.28M
355
$4.27M
356
$4.25M
357
$4.22M
358
$4.12M
359
$4.11M
360
$4.1M
361
$4.01M
362
$3.93M
363
$3.9M
364
$3.87M
365
$3.83M
366
$3.78M
367
$3.76M
368
$3.73M
369
$3.73M
370
$3.71M
371
$3.61M
372
$3.53M
373
$3.53M
374
$3.51M
375
$3.51M