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
376
$5.37M
377
$5.28M
378
$5.27M
379
$5.26M
380
$5.19M
381
$5.12M
382
$5.05M
383
$5.02M
384
$4.97M
385
$4.92M
386
$4.86M
387
$4.84M
388
$4.84M
389
$4.81M
390
$4.8M
391
$4.79M
392
$4.77M
393
$4.75M
394
$4.73M
395
$4.67M
396
$4.63M
397
$4.61M
398
$4.6M
399
$4.56M
400
$4.55M