776 hedge funds and large institutions have $66.1B invested in Biogen in 2014 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 284 increasing their positions, 294 reducing their positions, and 46 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
776
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
33
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$893M
Puts
$1.2B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
301
$5.12M
302
$5.07M
303
$5.07M
304
$5.06M
305
$5.03M
306
$5.01M
307
$4.95M
308
$4.94M
309
$4.87M
310
$4.87M
311
$4.87M
312
$4.85M
313
$4.64M
314
$4.64M
315
$4.58M
316
$4.58M
317
$4.28M
318
$4.26M
319
$4.16M
320
$4.13M
321
$4.12M
322
$4.11M
323
$3.98M
324
$3.97M
325
$3.96M