Shares of Apple Inc. and of General Electric Co. are the only two Dow Jones Industrial Average components losing ground Wednesday, with the other 28 gainers being led by Exxon Mobil Corp. . The Dow was up 113 points in morning trade, after tumbling 392 points on Tuesday. GE’s stock fell 0.5%, extending Tuesday’s 3.1% slide, after J.P. Morgan analyst Stephen Tusa reiterated his underweight rating, saying GE Capital remained an “underappreciated risk,” and that GE would need to raise more capital to appease ratings agencies. Apple shares fell 0.4%, after Maxim Group downgraded the technology giant to hold from buy, citing skepticism over the service’s strategy. Meanwhile, Exxon Mobil shares surged 1.6%, after RBC Capital upgraded the oil giant and after a bounce in crude oil prices. Among the Dow’s other biggest gainers, Chevron Corp.’s stock climbed 1.0% and DowDuPont Inc. shares tacked on 0.9%.