Among the largest underlying components of XOP, in trading today Approach Resources Inc ( NASD: AREX) is up about 1.5%, Clayton Williams Energy, Inc. ( NASD: CWEI) is up about 0.3%, and Petroleum Development Corp. ( NASD: PETD) is up by about 2.4%.
FORBES: Noteworthy ETF Outflows: XOP, AREX, CWEI, PETD