American Airlines Group Inc.'s stock surged 1.4% in morning trade Wednesday, after S&P Dow Jones Indices said the airline will become a component of the 131-year-old Dow Jones Transportation Average , effective Oct. 15. The Dow transports will then include six airline companies, the most since December 2002. American Airlines will replace Con-way Inc. , which is being acquired by XPO Logistics Inc. . The airline companies currently in the index are United Continental Holdings , Southwest Airlines Co. , Delta Air Lines Inc. , JetBlue Airways Corp. and Alaska Air Group Inc. . The Dow transports is the first Dow Jones stock index through a predecessor index, assembled by Charles Dow in 1884. That predates the Dow Jones Industrial Average , which made its debut in May 1896.
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