Shares in Imagination Technologies Group, the company behind the technology used in Apple's new iPad, leapt to their highest level in nearly 18 years following positive comments from Goldman Sachs. Analyst Simon Schafer said that "IMG remains at the heart of some of the most significant smartphone and tablet ecosystems", and forecast a 1,000p rise in the share price over the next year, compared to a previous prediction of 850p.Retailing peers Dixons Retail, Ocado, SuperGroup and Home Retail were all rising, with the latter being lifted by an upgrade by HSBC from underweight to overweight.FTSE 250 - RisersImagination Technologies Group (IMG) 706.00p +10.40%Ocado Group (OCDO) 130.50p +9.57%Dixons Retail (DXNS) 17.04p +6.70%Yule Catto & Co (YULC) 250.10p +5.71%Homeserve (HSV) 254.90p +5.03%Supergroup (SGP) 630.00p +5.00%Aquarius Platinum Ltd. (AQP) 162.10p +4.72%Hunting (HTG) 971.00p +4.41%Ophir Energy (OPHR) 431.10p +4.13%Allied Gold Mining (ALD) 130.60p +3.98%FTSE 250 - FallersSpirit Pub Company (SPRT) 58.50p -4.10%Cable & Wireless Worldwide (CW.) 33.95p -2.81%Kenmare Resources (KMR) 50.10p -2.72%Soco International (SIA) 327.50p -2.56%Talvivaara Mining Company (TALV) 266.00p -2.39%Stobart Group Ltd. (STOB) 133.40p -2.27%Britvic (BVIC) 378.60p -2.20%BH Global Ltd. USD Shares (BHGU) 11.76 -1.59%Babcock International Group (BAB) 746.00p -1.52%London & Stamford Property Ltd. (LSP) 112.00p -1.50%NR