Bumi plc said coal sales and production grew during the fourth quarter in the wake of company infighting with co-founder Nat Rothschild. Sales were up 30% to 6.5m tonnes and output grew 15% to 5.9m tonnes over the last three months of 2012 at Indonesian business PT Berau Coal Energy, in which Bumi owns an 85% stake. Fidessa was heading higher after its full-year results yesterday. The stock was upgraded today by Investec to 'buy'.Ocado Group was a high riser, continuing Monday's gains on takeover speculation and market chatter to that effect. Diploma fell after Canaccord Genuity retained its 'hold' rating on the stock, with a target price of 570p. FTSE 250 - RisersOcado Group (OCDO) 136.80p +7.46%Bumi (BUMI) 403.30p +4.73%Fidessa Group (FDSA) 1,650.00p +4.63%Pace (PIC) 238.00p +3.98%3i Group (III) 293.20p +3.93%London Stock Exchange Group (LSE) 1,300.00p +3.75%Tullett Prebon (TLPR) 291.10p +3.67%Moneysupermarket.com Group (MONY) 204.40p +3.49%Man Group (EMG) 104.00p +3.17%QinetiQ Group (QQ.) 206.20p +2.95%FTSE 250 - FallersDiploma (DPLM) 567.50p -3.32%Lonmin (LMI) 368.20p -2.85%African Barrick Gold (ABG) 341.50p -2.26%ICAP (IAP) 350.60p -1.98%Catlin Group Ltd. (CGL) 506.00p -1.94%Salamander Energy (SMDR) 195.90p -1.80%Hochschild Mining (HOC) 431.90p -1.73%Supergroup (SGP) 706.50p -1.60%Playtech Ltd. (PTEC) 529.00p -1.58%COLT Group SA (COLT) 112.10p -1.58%NR