** Shares of gaming firm Rank Group RNK.L down about 4% at 116p, among top losers on London's mid-caps index .FTMC, which is up 0.65%** Co says John Ott to be appointed as chair with effect from November 17, succeeding interim chair Karen Whitworth** YTD, up to Monday's close, stock surged 31.4%, while FTMC rose nearly 7%
(Reporting by Simone Lobo)
((Simone.Lobo@thomsonreuters.com, +919920570373))