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
351
$4.93M
352
$4.91M
353
$4.86M
354
$4.85M
355
$4.73M
356
$4.59M
357
$4.56M
358
$4.52M
359
$4.41M
360
$4.4M
361
$4.39M
362
$4.38M
363
$4.38M
364
$4.3M
365
$4.27M
366
$4.22M
367
$4.18M
368
$4.17M
369
$4.17M
370
$4.16M
371
$4.14M
372
$4.13M
373
$4.13M
374
$4.06M
375
$4.06M