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
426
$2.81M
427
$2.78M
428
$2.75M
429
$2.72M
430
$2.71M
431
$2.67M
432
$2.66M
433
$2.66M
434
$2.63M
435
$2.62M
436
$2.62M
437
$2.6M
438
$2.6M
439
$2.6M
440
$2.6M
441
$2.6M
442
$2.6M
443
$2.6M
444
$2.58M
445
$2.58M
446
$2.56M
447
$2.56M
448
$2.55M
449
$2.53M
450
$2.52M