Below is a three month price history chart comparing the stock performance of NOA, versus CLB and SUG.

FORBES: Connect

V. ( NYSE: CLB) which is down about 0.2% today, and Southern Union Co. ( NYSE: SUG) trading lower by about 0.5%.

FORBES: Connect

According to the ETF Finder at ETF Channel, SUG makes up 1.41% of the Dynamic Energy Sector Portfolio ETF ( AMEX: PXI) which is trading higher by about 0.5% on the day Monday.

FORBES: SUG Crosses Critical Technical Indicator

Shares of SUG have jumped 54% this year.

FORBES: Williams Tries To Steal Southern Union From Energy Transfer