CME Group Inc plans to sell most of the landmark Chicago Board of Trade building complex and rent rather than own the floor where contracts on corn, cattle and other farm goods are traded. CME will keep the building that houses the trading of financial contracts, which include futures on U.S. Treasuries and currencies, it said in a statement on Monday. The other two buildings, one of which is home to agricultural trading, will be marketed for sale by Jones Lang LaSalle and Holly Duran Real Estate Partners LLC, it said. The CME plans to take out a 15-year lease on the agriculture trading floor, signaling what it says is its commitment to open-outcry trading. The CME has never been enamored with owning buildings, so it fits with their management moves in the past, said Jerry Gidel, an analyst for North America Risk Management Inc. I think the 15-year lease would be significant and says there should be no disruptions to the floor for quite a while.