Eton Park Capital Management’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	-111,191	Closed	-$30.4M	–	2
2017 Q1	$30.4M	Sell	111,191 -216,691	-66%	-$59.2M	1.33%	12
2016 Q4	$93M	Buy	327,882 +263,882	+412%	+$74.8M	1.85%	14
2016 Q3	$20M	Buy	+64,000	New	+$20M	0.35%	33