The NYSE Arca Natural Gas Index (XNG) - Quarterly Rebalancing			
"Changes effective before the open of trading Monday, July 22, 2013"			
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Symbol	Component Name	Previous Share Weight	Rebalanced Share Weight
APA	Apache Corp	535	479
APC	Anadarko Petroleum Corp	461	438
CHK	Chesapeake Energy Corp	1982	1803
COG	Cabot Oil & Gas Corp	570	553
DVN	Devon Energy Corp	716	703
ECA	Encana Corporation	Addition	2339
EOG	EOG Resources Inc	325	Deletion
EQT	EQT Corp	553	487
GAS	AGL Resources Inc	848	889
KMI	Kinder Morgan Inc	948	1029
NBL	Noble Energy Inc	688	616
NFG	National Fuel Gas Co	625	647
NI	NiSource Inc	1185	1313
QEP	QEP Resources Inc	1297	1363
RRC	Range Resources Corp	488	518
STR	Questar Corp	1454	1713
SWN	Southwestern Energy Co	1041	1040
TRP	TransCanada Corp	776	902
UPL	Ultra Petroleum Corp	1775	1877
WMB	Williams Companies Inc	988	1187
WPX	WPX Energy Inc	2249	2010
			
Additions			
ECA	Encana Corporation		
			
Deletions			
EOG	EOG Resources Inc