CME Group said it is buying the Kansas City Board of Trade for $126 million in cash. The derivatives exchange said buying the bourse, its first exchange purchase in five years, is a way to expand its agricultural products. The KCBT’s board selected CME over other exchanges, including BATS Global Markets and IntercontinentalExchange, sources said. The proposed deal makes the Minneapolis Grain Exchange the last independently owned agricultural exchange in the U.S. Reuters (10/17), Crain’s Chicago Business/Reuters (10/17), Bloomberg Businessweek (10/17), Fox Business/Dow Jones Newswires (10/17), Reuters (10/18)…