922 hedge funds and large institutions have $58.4B invested in Biogen in 2015 Q3 according to their latest regulatory filings, with 105 funds opening new positions, 406 increasing their positions, 283 reducing their positions, and 150 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
922
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
37
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.22B
Puts
$1.8B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
301
$7.75M
302
$7.72M
303
$7.72M
304
$7.61M
305
$7.55M
306
$7.47M
307
$7.38M
308
$7.37M
309
$7.28M
310
$7.27M
311
$7.18M
312
$7.13M
313
$7.11M
314
$7M
315
$6.96M
316
$6.95M
317
$6.95M
318
$6.94M
319
$6.92M
320
$6.83M
321
$6.71M
322
$6.7M
323
$6.67M
324
$6.67M
325
$6.67M