947 hedge funds and large institutions have $49.3B invested in Biogen in 2016 Q1 according to their latest regulatory filings, with 95 funds opening new positions, 364 increasing their positions, 350 reducing their positions, and 103 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
947
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
32
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.05B
Puts
$1.13B
Net Calls
Net Calls Change

Top Buyers

1 +$458M
2 +$148M
3 +$114M
4
VAM
Visium Asset Management
New York
+$99.3M
5
Invesco
Invesco
Georgia
+$89.1M
Name Holding Trade Value Shares
Change
Change in
Stake
301
$6.94M
302
$6.91M
303
$6.79M
304
$6.76M
305
$6.72M
306
$6.68M
307
$6.62M
308
$6.58M
309
$6.53M
310
$6.51M
311
$6.45M
312
$6.42M
313
$6.42M
314
$6.41M
315
$6.4M
316
$6.36M
317
$6.32M
318
$6.23M
319
$6.22M
320
$6.21M
321
$6.16M
322
$6.09M
323
$6.08M
324
$6.06M
325
$6.05M