Baker Bros. Advisors’s Biogen BIIB Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2017 Q2	–	Sell	-16,500	Closed	-$4.51M	–	121
2017 Q1	$4.51M	Hold	16,500	–	–	0.04%	67
2016 Q4	$4.68M	Buy	+16,500	New	+$4.68M	0.05%	66