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
601
$802K
602
$802K
603
$801K
604
$781K
605
$776K
606
$773K
607
$773K
608
$772K
609
$770K
610
$768K
611
$763K
612
$763K
613
$760K
614
$752K
615
$742K
616
$736K
617
$733K
618
$727K
619
$725K
620
$716K
621
$713K
622
$712K
623
$710K
624
$704K
625
$702K