A.R.T. Advisors’s Williams Companies WMB Stock Holding History

Quarter	Market Value	Status	Shares	Shares Change %	Trade Value	Portfolio Weight	Portfolio Position
2015 Q2	–	Sell	-114,512	Closed	-$5.79M	–	1740
2015 Q1	$5.79M	Buy	+114,512	New	+$5.79M	0.2%	119
2014 Q3	–	Sell	-11,469	Closed	-$667K	–	1551
2014 Q2	$667K	Buy	+11,469	New	+$667K	0.03%	648