Share in AVEVA were lower despite a broadly in-line set of first-half results after Panmure Gordon maintained its 'hold' rating for the engineering software firm, saying that the shares are still too expensive.Imagination Technologies was rising on reports that it today announced an IP combining a number of technologies into a single solution as part of its System-on-Chips solutions. British outsourcing and energy services company MITIE Group was also on the rise after it posted a 10.5% rise in revenue to £1.04bn in the first half, driven by growth in the Facilities Management division.FTSE 250 - RisersImagination Technologies Group (IMG) 252.30p +5.08%Synthomer (SYNT) 232.10p +2.84%Bank of Georgia Holdings (BGEO) 2,160.00p +2.76%Ocado Group (OCDO) 438.30p +2.55%esure Group (ESUR) 232.20p +2.29%Dechra Pharmaceuticals (DPH) 697.50p +2.27%Electra Private Equity (ELTA) 2,321.00p +2.25%PayPoint (PAY) 1,048.00p +2.14%Fidelity China Special Situations (FCSS) 105.60p +2.13%Man Group (EMG) 84.75p +1.99%FTSE 250 - FallersAveva Group (AVV) 2,371.00p -7.60%Essar Energy (ESSR) 102.00p -3.23%Homeserve (HSV) 243.80p -3.22%Spirent Communications (SPT) 107.50p -3.15%Partnership Assurance Group (PA.) 316.00p -2.77%Oxford Instruments (OXIG) 1,458.00p -2.47%Lonmin (LMI) 332.00p -2.47%Regus (RGU) 191.60p -2.24%Devro (DVO) 308.20p -2.16%Synergy Health (SYR) 1,050.00p -1.78%NR