** Derivatives exchange operator CME Group CME.O down 4.55% at $264.56

** Co reports Q3 revenue of $1.54 billion, down from $1.58 billion a year earlier

** Co's Q3 clearing and transaction fees fell 5.3% to $1.23 billion from $1.30 billion a year ago

** Also reports Q3 adj. profit of $2.68 per share

** Including session's move, stock up ~14.34% YTD

(Reporting by Megha Kumari)

((Megha.Kumari@thomsonreuters.com;))