NEW YORK (TheStreet) — Shares of FedEx Corp. are higher by 1.80% to $170.80 in pre-market trading on Thursday, following a ratings upgrade to "buy" from "neutral" at Goldman Sachs. The firm increased its price target to $211 from $173 on the delivery service's stock. On Wednesday, FedEx released its 2014 second quarter earnings results, which improved year-over-year, but fell short of analysts …
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