991 hedge funds and large institutions have $50.9B invested in Biogen in 2017 Q2 according to their latest regulatory filings, with 79 funds opening new positions, 351 increasing their positions, 390 reducing their positions, and 96 closing their positions.

New
Increased
Maintained
Reduced
Closed

more ownership

Funds ownership:

less capital invested

Capital invested by funds: $ → $

less funds holding

Funds holding:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

15% less funds holding in top 10

Funds holding in top 10: 2723 (-4)

16% less call options, than puts

Call options by funds: $954M | Put options by funds: $1.14B

18% less first-time investments, than exits

New positions opened: 79 | Existing positions closed: 96

Holders
991
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
23
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$954M
Puts
$1.14B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
526
$1.54M
527
$1.52M
528
$1.52M
529
$1.49M
530
$1.47M
531
$1.44M
532
$1.43M
533
$1.42M
534
$1.41M
535
$1.41M
536
$1.4M
537
$1.39M
538
$1.38M
539
$1.38M
540
$1.38M
541
$1.37M
542
$1.34M
543
$1.33M
544
$1.32M
545
$1.31M
546
$1.29M
547
$1.28M
548
$1.27M
549
$1.27M
550
$1.26M