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
451
$2.5M
452
$2.49M
453
$2.48M
454
$2.48M
455
$2.48M
456
$2.47M
457
$2.46M
458
$2.45M
459
$2.44M
460
$2.43M
461
$2.39M
462
$2.36M
463
$2.35M
464
$2.34M
465
$2.31M
466
$2.3M
467
$2.29M
468
$2.22M
469
$2.17M
470
$2.16M
471
$2.15M
472
$2.09M
473
$2.08M
474
$2.06M
475
$2.04M