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
526
$1.49M
527
$1.46M
528
$1.45M
529
$1.43M
530
$1.42M
531
$1.41M
532
$1.4M
533
$1.4M
534
$1.39M
535
$1.39M
536
$1.38M
537
$1.34M
538
$1.34M
539
$1.31M
540
$1.3M
541
$1.29M
542
$1.29M
543
$1.28M
544
$1.28M
545
$1.27M
546
$1.27M
547
$1.27M
548
$1.27M
549
$1.25M
550
$1.25M