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
476
$2.03M
477
$2.02M
478
$2.01M
479
$2.01M
480
$2.01M
481
$2.01M
482
$2M
483
$1.99M
484
$1.97M
485
$1.96M
486
$1.96M
487
$1.95M
488
$1.94M
489
$1.94M
490
$1.93M
491
$1.91M
492
$1.91M
493
$1.91M
494
$1.9M
495
$1.89M
496
$1.87M
497
$1.82M
498
$1.82M
499
$1.79M
500
$1.77M