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
301
$10M
302
$10M
303
$9.96M
304
$9.9M
305
$9.85M
306
$9.78M
307
$9.74M
308
$9.72M
309
$9.52M
310
$9.29M
311
$9.26M
312
$9.21M
313
$9.21M
314
$9.15M
315
$9.12M
316
$9.09M
317
$9.09M
318
$9.02M
319
$9.02M
320
$9.01M
321
$8.82M
322
$8.69M
323
$8.64M
324
$8.54M
325
$8.46M