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
351
$3.23M
352
$3.22M
353
$3.2M
354
$3.15M
355
$3.13M
356
$3.13M
357
$3.12M
358
$3.12M
359
$3.11M
360
$3.11M
361
$3.06M
362
$3.06M
363
$3.06M
364
$3.06M
365
$2.98M
366
$2.98M
367
$2.98M
368
$2.97M
369
$2.95M
370
$2.94M
371
$2.92M
372
$2.9M
373
$2.89M
374
$2.85M
375
$2.83M