United Airlines soars on upgrades despite Boeing-related hit
Over the past six months United Airlines (UAL:NASDAQ) shares have gained over 45% as the US airline managed to shrug off negative news concerning delayed deliveries and canceled flights related to safety issues at aircraft maker Boeing (BA:NYSE).On the day of its first quarter results (16 April) United Airlines shares gained nearly 20% at one point hitting the $50 mark as the US airline upgraded g