Investors have failed to warm to a trading update from Imagination Technologies.The chip designer said it has continued to see growing interest in its technologies across many partners and markets in the period from 1 November 2009 to 19 March 2010.Shares in Sports Direct fall back after outdoor equipment retailer rejected an indicative 62p bid from the sportswear group.In a statement, Blacks said the offer for Sports Direct contained a number of pre-conditions, which included a unanimous board recommendation. The board, though, considers the offer to be "wholly inadequate".Investors are keen to tuck into Greggs for the second day in a row following the better than expected profits the baked snacks chain posted yesterday.Pre-tax profit came to £48.8m the 53 weeks ended 2 January 2010, from £49.47m the year before. The market consensus for pre-tax profit was £46.43m.FTSE 250 - RisersDS Smith (SMDS) 141.50p +4.81%Booker Group (BOK) 43.76p +4.09%Greggs (GRG) 471.90p +3.65%Close Brothers Group (CBG) 801.00p +3.35%Ferrexpo (FXPO) 313.70p +2.99%Fenner (FENR) 206.50p +2.89%Intermediate Capital Group (ICP) 278.70p +2.88%Carpetright (CPR) 932.50p +2.70%Enterprise Inns (ETI) 124.00p +2.56%Investec (INVP) 548.50p +2.52%FTSE 250 - FallersDunelm Group (DNLM) 364.20p -3.01%Daejan Holdings (DJAN) 2,410.00p -2.78%St. Modwen Properties (SMP) 186.30p -2.36%Hikma Pharmaceuticals (HIK) 592.00p -2.31%Drax Group (DRX) 362.10p -2.27%Imagination Technologies (IMG) 222.40p -2.20%Sports Direct International (SPD) 103.50p -2.17%PZ Cussons (PZC) 266.40p -2.06%Fidessa (FDSA) 1,355.00p -2.02%Rathbone Brothers (RAT) 842.00p -1.75%