Car and bike parts retailer Halfords jumped after appointing a new Chief Executive Officer following the abrupt departure of David Wild in the summer, as it revealed that full-year profits would be at the top end of guidance after a strong second quarter. Bwin.party continued to be a popular choice, having risen steadily since announcing fairly steadily since the online gaming firm announced plans to sell Ongame, a B2B online poker network, to Amaya Gaming Group for up to 25m euro on a cash-free and debt-free basis.Also on the up was builder Carillion after it said it "expects to deliver improvements in operating profit and total operating margin" for the full year ending December 31st 2012. FTSE 250 - RisersHalfords Group (HFD) 304.10p +14.32%Bwin.party Digital Entertainment (BPTY) 115.90p +6.04%Sports Direct International (SPD) 380.30p +5.64%Rentokil Initial (RTO) 87.00p +4.82%Imagination Technologies Group (IMG) 497.00p +3.76%New World Resources A Shares (NWR) 275.20p +3.42%Workspace Group (WKP) 282.00p +3.41%Victrex (VCT) 1,375.00p +3.31%Carillion (CLLN) 285.80p +3.18%FirstGroup (FGP) 199.40p +3.10%FTSE 250 - FallersHeritage Oil (HOIL) 186.70p -2.20%Bovis Homes Group (BVS) 490.50p -2.00%Petra Diamonds Ltd.(DI) (PDL) 114.20p -1.81%NMC Health (NMC) 191.70p -1.54%Afren (AFR) 139.70p -1.48%Kenmare Resources (KMR) 39.60p -1.37%Dechra Pharmaceuticals (DPH) 583.00p -1.10%Essar Energy (ESSR) 118.00p -1.09%London Stock Exchange Group (LSE) 969.50p -1.07%Tullett Prebon (TLPR) 294.10p -1.01%NR