Below is a three month price history chart comparing the stock performance of DNR, versus UPL and ERF.

FORBES: DNR Crosses Technical Indicator

Below is a three month price history chart comparing the stock performance of UPL, versus CVE and DVN.

FORBES: Ultra Petroleum Stock Getting Very Oversold

According to the ETF Finder at ETF Channel, UPL makes up 2.54% of the First Trust ISE-Revere Natural Gas Index Fund ETF ( AMEX: FCG) which is trading lower by about 1.1% on the day Tuesday.

FORBES: Ultra Petroleum Shares Enter Oversold Territory

According to the ETF Finder at ETF Channel, UPL makes up 3.28% of the First Trust ISE-Revere Natural Gas Index Fund ETF ( AMEX: FCG) which is trading lower by about 1.1% on the day Thursday.

FORBES: Ultra Petroleum Stock Getting Very Oversold

According to the ETF Finder at ETF Channel, UPL makes up 3.84% of the First Trust ISE-Revere Natural Gas Index Fund ETF ( AMEX: FCG )which is trading up by about 1.9% on the day Friday.

FORBES: Top Buys by Top Brass: V.P. Johnson's $100.5K Bet on UPL

Among the largest underlying components of XOP, in trading today McMoran Exploration Co ( NYSE: MMR) is down about 0.2%, Quicksilver Resources, Inc. ( NYSE: KWK) is off about 4.1%, and Ultra Petroleum Corp. ( NYSE: UPL) is lower by about 0.3%.

FORBES: XOP, MMR, KWK, UPL: Large Outflows Detected at ETF