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
576
$841K
577
$823K
578
$816K
579
$812K
580
$790K
581
$787K
582
$770K
583
$770K
584
$764K
585
$759K
586
$754K
587
$753K
588
$749K
589
$747K
590
$739K
591
$738K
592
$730K
593
$724K
594
$713K
595
$704K
596
$700K
597
$700K
598
$691K
599
$687K
600
$684K