A.R.T. Advisors’s Beacon Roofing Supply, Inc. BECN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2018 Q1	–	Sell	-24,200	Closed	-$1.54M	–	1800
2017 Q4	$1.54M	Sell	24,200 -3,700	-13%	-$213K	0.07%	460
2017 Q3	$1.43M	Buy	27,900 +17,700	+174%	+$824K	0.07%	391
2017 Q2	$499K	Buy	+10,200	New	+$501K	0.03%	811
2017 Q1	–	Sell	-11,900	Closed	-$548K	–	1761
2016 Q4	$548K	Buy	+11,900	New	+$532K	0.03%	706
2016 Q3	–	Sell	-18,528	Closed	-$842K	–	1210
2016 Q2	$842K	Buy	+18,528	New	+$798K	0.04%	610
2016 Q1	–	Sell	-31,328	Closed	-$1.29M	–	1700
2015 Q4	$1.29M	Sell	31,328 -2,089	-6%	-$80K	0.06%	460
2015 Q3	$1.08M	Buy	+33,417	New	+$1.14M	0.04%	601
2014 Q4	–	Sell	-41,068	Closed	-$1.05M	–	1703
2014 Q3	$1.05M	Buy	41,068 +16,583	+68%	+$469K	0.05%	500
2014 Q2	$810K	Buy	24,485 +7,570	+45%	+$266K	0.04%	572
2014 Q1	$653K	Sell	16,915 -7,470	-31%	-$289K	0.03%	658
2013 Q4	$982K	Buy	+24,385	New	+$885K	0.05%	484