Three manila folders sit on a desk in Wall Street financial analyst's office. Key Points GFL Environmental has recently mounted a comeback after declining for several months, thanks to pricing accelerations and EBITDA improvement, among other factors. AerCap Holdings shares are trading near a 1-year high but still have room to grow as a result of strong sales, inventory, and cash management. Despite a recent trading halt, Petrobras stock appears undervalued relative to other firms in the energy space. ...