Fidessa shares soared after Credit Suisse increased its target price from 1,782p to 2,213p and retained an outperform rating. In spite of Drax's EBITDA falling 10.6% to £298.4m in 2012, the coal power station group was making gains after the result came in ahead of the company's own guidance range (£285-290m) and the consensus forecast (£292.5m). High Street betting shop Ladbrokes rose after Investec raised its recommendation from 'hold' to 'buy', citing a "promising outlook". Meanwhile, shares in European gaming group Rank were down slightly despite receiving the green light from the Competition Commission to acquire 19 casinos from Gala Coral Group. FTSE 250 - RisersFidessa Group (FDSA) 1,979.00p +6.51%Drax Group (DRX) 639.50p +5.79%COLT Group SA (COLT) 120.40p +5.15%Elementis (ELM) 235.80p +4.66%Alent (ALNT) 349.90p +4.17%Ladbrokes (LAD) 229.90p +3.93%Jupiter Fund Management (JUP) 343.00p +3.84%Homeserve (HSV) 241.30p +3.74%Home Retail Group (HOME) 132.30p +3.44%Inchcape (INCH) 506.50p +3.39%FTSE 250 - FallersOcado Group (OCDO) 126.50p -1.94%Rank Group (RNK) 164.20p -1.91%Devro (DVO) 365.50p -1.27%Ted Baker (TED) 1,186.00p -1.17%Fenner (FENR) 412.90p -1.15%Man Group (EMG) 108.40p -1.09%African Barrick Gold (ABG) 280.00p -1.06%Lonmin (LMI) 363.10p -1.01%Petropavlovsk (POG) 320.00p -0.96%Renishaw (RSW) 1,861.00p -0.80%NR