Westinghouse Air Brake Technologies (WAB) shares ended the last trading session 4.9% higher at $197.96. The jump came on an impressive volume with a higher-than-average number of shares changing hands in the session. This compares to the stock's 3.6% loss over the past four weeks.The upside can be attributed to Wabtec's recently announced agreement with National Company Kazakhstan Temir Zholy (the national railway of Kazakhstan), aimed at providing Evolution Series locomotives and long-term service support. ...