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
276
$7.05M
277
$7M
278
$6.95M
279
$6.79M
280
$6.47M
281
$6.27M
282
$6.21M
283
$6.06M
284
$6.05M
285
$6.04M
286
$5.99M
287
$5.87M
288
$5.86M
289
$5.72M
290
$5.72M
291
$5.66M
292
$5.65M
293
$5.59M
294
$5.58M
295
$5.57M
296
$5.46M
297
$5.41M
298
$5.4M
299
$5.27M
300
$5.2M