Below is a three month price history chart comparing the stock performance of SM, versus QEP and XEC.

FORBES: Top Buys by Top Brass: Senior VP and General Counsel Copeland's $1.2M Bet on SM

Below is a three month price history chart comparing the stock performance of HUSA, versus WLL and XEC.

FORBES: Connect

Below is a three month price history chart comparing the stock performance of XEC, versus COG and PWE.

FORBES: Shares of XEC Now Oversold

Below is a three month price history chart comparing the stock performance of ENP, versus XEC and QEP.

FORBES: ENP Crosses Critical Technical Indicator

According to the ETF Finder at ETF Channel, XEC makes up 3.19% of the First Trust ISE-Revere Natural Gas Index Fund ETF ( AMEX: FCG) which is trading lower by about 5% on the day Monday.

FORBES: Shares of XEC Now Oversold