Telecoms and internet communication provider Kcom Group advanced after announcing a 10 per cent rise in its dividend in its annual results despite a slump in sales. 888 Holdings rallied after New York Congressman Peter King proposed a bill that back online gambling.Emerging markets fund Ashmore Group's shares retreated as Morgan Stanley reiterated its 'equal weight' rating and price target of 444p.Cobham slumped as the technology company received an 'underweight' rating from Morgan Stanley and price target of 195p, a 27.64% downside from the company's current price.FTSE 250 - RisersKCOM Group (KCOM) 83.05p +8.07%888 Holdings (888) 151.00p +7.86%Spirent Communications (SPT) 134.00p +7.72%Petropavlovsk (POG) 140.30p +7.10%New World Resources A Shares (NWR) 100.80p +6.84%Rank Group (RNK) 162.10p +5.19%African Barrick Gold (ABG) 140.80p +4.92%Petra Diamonds Ltd.(DI) (PDL) 118.50p +4.87%Anite (AIE) 133.80p +4.12%Barratt Developments (BDEV) 317.90p +3.92%FTSE 250 - FallersAshmore Group (ASHM) 364.90p -2.72%Perform Group (PER) 576.00p -2.70%Cobham (COB) 264.30p -1.93%Home Retail Group (HOME) 151.80p -1.75%RPS Group (RPS) 209.60p -1.60%Filtrona PLC (FLTR) 689.50p -1.29%Telecom Plus (TEP) 1,249.00p -1.19%Wetherspoon (J.D.) (JDW) 621.00p -1.11%RPC Group (RPC) 422.30p -0.85%BH Global Ltd. USD Shares (BHGU) 11.75 -0.84%RD