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
276
$4.47M
277
$4.4M
278
$4.39M
279
$4.38M
280
$4.37M
281
$4.27M
282
$4.11M
283
$4.07M
284
$4M
285
$3.96M
286
$3.93M
287
$3.86M
288
$3.8M
289
$3.75M
290
$3.71M
291
$3.67M
292
$3.67M
293
$3.66M
294
$3.53M
295
$3.52M
296
$3.51M
297
$3.47M
298
$3.45M
299
$3.44M
300
$3.27M