Shares in Premier Farnell are ahead after the electronic and industrial components supplier issued a confident outlook for 2010 as quarterly profit more than doubled.Imagination Technologies is up in sympathy with ARM, which also makes chips used in smartphones, amid rumours of an Apple bid for ARM.Car parts and bicycle retailer Halfords said it is confident of future earnings growth despite the uncertain economic outlook after posting a sharp rise in profits and revenues in the year to April 2.FTSE 250 - RisersPremier Farnell (PFL) 244.20p +11.20%Imagination Technologies (IMG) 257.30p +7.66%Halfords Group (HFD) 535.00p +7.04%Ashtead Group (AHT) 111.20p +5.00%Grainger (GRI) 109.60p +4.88%Telecity Group (TCY) 392.90p +4.80%Melrose Resources (MRS) 244.40p +4.71%ITV (ITV) 54.70p +3.70%Misys (MSY) 257.90p +3.57%SDL International (SDL) 455.60p +3.26%FTSE 250 - FallersTrinity Mirror (TNI) 81.65p -5.50%Game Group (GMG) 85.20p -5.39%Unite Group (UTG) 168.30p -3.00%SIG (SHI) 105.80p -2.85%Gartmore Group (GRT) 105.70p -2.76%Sports Direct International (SPD) 92.85p -2.37%Brit Insurance Holdings NV (BRE) 722.50p -2.23%Punch Taverns (PUB) 59.45p -2.22%Pace (PIC) 151.80p -2.06%Halma (HLMA) 251.90p -1.79%