776 hedge funds and large institutions have $66.1B invested in Biogen in 2014 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 284 increasing their positions, 294 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
776
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
33
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$893M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
451
$1.44M
452
$1.41M
453
$1.41M
454
$1.41M
455
$1.4M
456
$1.38M
457
$1.38M
458
$1.35M
459
$1.34M
460
$1.34M
461
$1.29M
462
$1.28M
463
$1.28M
464
$1.27M
465
$1.26M
466
$1.24M
467
$1.24M
468
$1.2M
469
$1.19M
470
$1.18M
471
$1.18M
472
$1.15M
473
$1.15M
474
$1.14M
475
$1.13M