A combination of good margin growth and well-balanced order growth led investors to buy this energy services stock last month. Shares in oil and gas equipment and services company Baker Hughes (BKR -5.07%) rose by 10.1% in July, according to data provided by S&P Global Market Intelligence. The move comes after an impressive set of earnings that displayed a combination of good progress on operational improvements and margin expansion, alongside broad-based order strength in industrial and energy technology ( ...