FirstGroup's shares rebounded from Monday's slump as advisors to the transport operator tried to gain support ahead of the closing of the company's 600m pound rights issue next year. Aveva Group advanced after Citigroup lifted its rating of the British multinational company to 'buy' from 'neutral' and retained its 2450p target price.SDL, on the other hand, slipped as the UK maker of translation software reported a drop in full-year earnings. Shares in metal flow engineering company Vesuvius also declined as Credit Suisse cut its rating to 'underperform' from 'neutral' and reduced its target price from 400p to 345p.FTSE 250 - RisersFirstGroup (FGP) 98.25p +6.79%Aveva Group (AVV) 2,397.00p +6.44%Thomas Cook Group (TCG) 127.20p +5.30%Telecity Group (TCY) 969.00p +5.15%Supergroup (SGP) 720.00p +5.11%TalkTalk Telecom Group (TALK) 232.90p +3.74%Lonmin (LMI) 293.40p +3.57%Hiscox Ltd (HSX) 551.50p +3.37%Atkins (WS) (ATK) 981.50p +3.32%Paragon Group Of Companies (PAG) 306.30p +3.10%FTSE 250 - FallersSDL (SDL) 265.10p -31.41%Hochschild Mining (HOC) 204.30p -3.68%Greene King (GNK) 769.50p -3.57%NMC Health (NMC) 313.60p -2.85%Vesuvius (VSVS) 369.40p -2.33%Home Retail Group (HOME) 129.10p -2.20%Petropavlovsk (POG) 143.50p -1.98%Kazakhmys (KAZ) 298.90p -1.74%Michael Page International (MPI) 374.40p -1.71%Chemring Group (CHG) 261.30p -1.66%RD