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
401
$3.4M
402
$3.38M
403
$3.35M
404
$3.27M
405
$3.23M
406
$3.23M
407
$3.16M
408
$3.13M
409
$3.1M
410
$3.08M
411
$3.06M
412
$3.05M
413
$3.05M
414
$3.04M
415
$3.04M
416
$3.03M
417
$3.02M
418
$2.96M
419
$2.95M
420
$2.94M
421
$2.91M
422
$2.91M
423
$2.9M
424
$2.9M
425
$2.83M