972 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, 347 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
972
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
376
$5.28M
377
$5.27M
378
$5.26M
379
$5.19M
380
$5.12M
381
$5.05M
382
$5.02M
383
$4.97M
384
$4.92M
385
$4.86M
386
$4.84M
387
$4.84M
388
$4.81M
389
$4.8M
390
$4.79M
391
$4.77M
392
$4.75M
393
$4.73M
394
$4.67M
395
$4.63M
396
$4.61M
397
$4.6M
398
$4.56M
399
$4.55M
400
$4.52M