884 hedge funds and large institutions have $72.3B invested in Biogen in 2014 Q4 according to their latest regulatory filings, with 130 funds opening new positions, 343 increasing their positions, 279 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
884
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
52
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$975M
Puts
$1.36B
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
276
$10.4M
277
$10.3M
278
$10.2M
279
$10.2M
280
$10M
281
$9.74M
282
$9.7M
283
$9.7M
284
$9.69M
285
$9.53M
286
$9.43M
287
$9.38M
288
$9.35M
289
$9.34M
290
$9.24M
291
$9.2M
292
$9.18M
293
$9.1M
294
$8.83M
295
$8.83M
296
$8.68M
297
$8.49M
298
$8.48M
299
$8.26M
300
$8.22M