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
326
$6.01M
327
$6M
328
$5.96M
329
$5.81M
330
$5.79M
331
$5.75M
332
$5.73M
333
$5.6M
334
$5.59M
335
$5.57M
336
$5.55M
337
$5.5M
338
$5.49M
339
$5.45M
340
$5.37M
341
$5.35M
342
$5.33M
343
$5.28M
344
$5.23M
345
$5.2M
346
$5.19M
347
$5.16M
348
$5.12M
349
$5.08M
350
$4.99M