646 hedge funds and large institutions have $47.5B invested in Biogen in 2013 Q2 according to their latest regulatory filings, with 646 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
646
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
29
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$527M
Puts
$606M
Net Calls
Net Calls Change

Top Buyers

No buyers this quarter

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change
Change in
Stake
226
$8.48M
227
$8.35M
228
$8.32M
229
$8.16M
230
$8.13M
231
$8.11M
232
$8.09M
233
$8.07M
234
$8.06M
235
$7.93M
236
$7.8M
237
$7.75M
238
$7.68M
239
$7.66M
240
$7.63M
241
$7.55M
242
$7.53M
243
$7.46M
244
$7.45M
245
$7.42M
246
$7.2M
247
$7.15M
248
$6.95M
249
$6.94M
250
$6.9M