EQT Midstream Partners (EQM) is back on the growth track after some rocky times in late 2013 and early 2014. The limited partnership, which was formed by EQT Corp. (EQT) to provide natural gas transmission, storage and gathering services in the Appalachian Basin, has delivered profit growth of 37% and 42% in the latest two quarters. Sales climbed 21% and 24% over that time.