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
276
$9.01M
277
$8.92M
278
$8.88M
279
$8.85M
280
$8.79M
281
$8.78M
282
$8.75M
283
$8.65M
284
$8.62M
285
$8.54M
286
$8.45M
287
$8.41M
288
$8.39M
289
$8.35M
290
$8.35M
291
$8.35M
292
$8.32M
293
$8.28M
294
$8.26M
295
$8.24M
296
$8.14M
297
$7.93M
298
$7.92M
299
$7.9M
300
$7.84M