973 hedge funds and large institutions have $85.3B invested in Biogen in 2015 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 367 increasing their positions, 348 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
973
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.21B
Puts
$1.72B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
351
$6.68M
352
$6.66M
353
$6.62M
354
$6.57M
355
$6.42M
356
$6.41M
357
$6.14M
358
$6.14M
359
$6.08M
360
$6.08M
361
$6.06M
362
$5.9M
363
$5.86M
364
$5.85M
365
$5.8M
366
$5.8M
367
$5.74M
368
$5.74M
369
$5.71M
370
$5.7M
371
$5.67M
372
$5.66M
373
$5.51M
374
$5.48M
375
$5.45M