** Stephens starts freight-trucking firm FedEx Freight FDXF.N with "overweight" rating; sets PT at $180

** PT implies a 24.4% upside to stock's last close

** Brokerage says FedEx Freight has significant room for quick operational and customer-service improvements

** FedEx Freight can grow profits through efficiency gains and technology improvements, even without strong volume growth- Stephens

** Separately, Stephens resumes coverage of XPO XPO.N and ArcBest ARCB.O with an "overweight" rating

** Six of 10 brokerages rate the stock "buy" or higher, four "hold"; their median PT is $179 - data compiled by LSEG

** As of last close, stock had risen fallen 4.2% YTD