Winton Capital Management’s Biogen BIIB Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2014 Q1	$30.8M	Buy	100,854 +21,319	+27%	+$6.52M	0.21%	198
2013 Q4	$22.2M	Buy	79,535 +33,088	+71%	+$9.25M	0.2%	208
2013 Q3	$11.2M	Buy	46,447 +8,660	+23%	+$2.09M	0.13%	256
2013 Q2	$8.13M	Buy	+37,787	New	+$8.13M	0.1%	293