Retailers JD Sports Fashion and Supergroup are also in demand.Tate & Lyle, the food ingredients group, has been given a lift by UBS after the broker raised its target price for the stock by 8%, from 550p to 595p.Stockbroker and investment manager Brewin Dolphin is edging higher after announcing that it is set to buy Ireland-based fund management firm Tilman Asset Management for a total consideration of €35.9m (£23.1m), payable in shares. Drax, the coal-fired power station operator, is helping higher after comments from Matrix. Germany's decision to exit all of its nuclear power plants marks a clear win for renewable energy, according to the broker, which thinks that Drax's biomass ambitions could benefit as "as the attractions of a baseload non-nuclear option increase in the eyes of UK policymakers." Set-top box maker Pace is firmer after it announced that its chairman Mike McTighe will step down.---BCFTSE 250 - RisersJD Sports Fashion (JD.) 950.00p +5.44%Betfair Group (BET) 817.50p +5.42%AZ Electronic Materials SA (WI) (AZEM) 329.40p +5.34%Exillon Energy (EXI) 449.70p +4.58%Supergroup (SGP) 1,103.00p +4.55%Soco International (SIA) 396.10p +4.32%Senior (SNR) 157.10p +3.90%Ocado Group (OCDO) 218.00p +3.81%Stobart Group Ltd. (STOB) 138.90p +3.58%Kenmare Resources (KMR) 48.89p +3.36%FTSE 250 - FallersDaejan Holdings (DJAN) 2,790.00p -2.11%Synergy Health (SYR) 866.50p -1.65%Gem Diamonds Ltd. (DI) (GEMD) 266.20p -1.59%Babcock International Group (BAB) 682.50p -1.52%IG Group Holdings (IGG) 449.40p -1.45%Domino Printing Sciences (DNO) 671.00p -1.40%Telecity Group (TCY) 542.00p -1.19%Phoenix Group Holdings (DI) (PHNX) 660.50p -1.12%United Business Media Ltd. (UBM) 584.50p -1.10%London Stock Exchange Group (LSE) 979.50p -1.06%