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
476
$1.74M
477
$1.74M
478
$1.72M
479
$1.72M
480
$1.69M
481
$1.69M
482
$1.69M
483
$1.67M
484
$1.66M
485
$1.66M
486
$1.64M
487
$1.62M
488
$1.61M
489
$1.6M
490
$1.6M
491
$1.59M
492
$1.59M
493
$1.58M
494
$1.55M
495
$1.54M
496
$1.53M
497
$1.53M
498
$1.51M
499
$1.51M
500
$1.5M