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
376
$2.78M
377
$2.78M
378
$2.61M
379
$2.6M
380
$2.6M
381
$2.58M
382
$2.55M
383
$2.55M
384
$2.53M
385
$2.52M
386
$2.51M
387
$2.49M
388
$2.48M
389
$2.45M
390
$2.45M
391
$2.45M
392
$2.45M
393
$2.4M
394
$2.36M
395
$2.36M
396
$2.35M
397
$2.35M
398
$2.29M
399
$2.28M
400
$2.21M