Chiron Investment Management’s Biogen BIIB Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2018 Q1	–	Sell	-91,096	Closed	-$29M	–	68
2017 Q4	$29M	Buy	91,096 +31,100	+52%	+$9.91M	3.93%	5
2017 Q3	$18.8M	Buy	59,996 +30,996	+107%	+$9.71M	3.95%	8
2017 Q2	$7.87M	Buy	+29,000	New	+$7.87M	2.34%	20