Oil prices have come off recent highs, but remain above $85 a barrel. That provides plenty of margin for domestic oil plays Concho Resources (CXO) and Northern Oil & Gas (NOG). Chinese solar products maker JinkoSolar(JKS) likely delivered another of triple-digit profit and sales growth. El Paso Pipeline Partners (EPB) has enjoyed solid growth amid relatively low natural gas prices. All four are part of the IBD 50, the high-powered list of superior stocks based on fundamental and technical factors.