Marshall Wace’s Gastar Exploration Inc. GST Stock Holding History

Quarter	Market Value	Status	Shares	Shares Change %	Trade Value	Portfolio Weight	Portfolio Position
2015 Q1	–	Sell	-950,523	Closed	-$2.29M	–	1006
2014 Q4	$2.29M	Sell	950,523 -186,604	-16%	-$450K	0.03%	434
2014 Q3	$6.68M	Buy	1,137,127 +936,763	+468%	+$5.5M	0.1%	247
2014 Q2	$1.75M	Buy	+200,364	New	+$1.75M	0.03%	416