1,100 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, 469 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: 86.83%84.16% (-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: 469

Holders
1,100
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
501
$1.48M
502
$1.47M
503
$1.44M
504
$1.44M
505
$1.44M
506
$1.41M
507
$1.38M
508
$1.37M
509
$1.37M
510
$1.35M
511
$1.33M
512
$1.33M
513
$1.33M
514
$1.32M
515
$1.32M
516
$1.29M
517
$1.29M
518
$1.28M
519
$1.27M
520
$1.27M
521
$1.26M
522
$1.26M
523
$1.25M
524
$1.25M
525
$1.22M