Citi analyst Christian Wetherbee says XPO Logistics' "modest increase" in 2017 and 2018 adjusted EBITDA guidance may have fallen short of some of the high expectations. The analyst points out, however, that the guidance raise came amid "meaningful" margin compression in the brokerage and intermodal markets. This should be seen as credit to XPO's diversification and the growth provided by LTL, Last Mile and Contract Logistics, Wetherbee tells investors in a post-earnings research note. He continues to view XPO as one of the most compelling growth stories in Transportation and reiterates a Buy rating on the shares with a $75 price target.