947 hedge funds and large institutions have $49.3B invested in Biogen in 2016 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 364 increasing their positions, 350 reducing their positions, and 103 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
947
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
32
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.05B
Puts
$1.13B
Net Calls
Net Calls Change

Top Buyers

1 +$458M
2 +$148M
3 +$114M
4
VAM
Visium Asset Management
New York
+$99.3M
5
Invesco
Invesco
Georgia
+$89.1M
Name Holding Trade Value Shares
Change
Change in
Stake
501
$1.77M
502
$1.77M
503
$1.75M
504
$1.75M
505
$1.73M
506
$1.73M
507
$1.72M
508
$1.72M
509
$1.71M
510
$1.71M
511
$1.7M
512
$1.69M
513
$1.66M
514
$1.61M
515
$1.61M
516
$1.57M
517
$1.56M
518
$1.55M
519
$1.55M
520
$1.55M
521
$1.54M
522
$1.52M
523
$1.51M
524
$1.5M
525
$1.5M