Home Retail Group soared to the top of the FTSE 250 Thursday after Britain's biggest household retailer lifted its full-year profit guidance.The group said its annual pre-tax profit would be £10m pounds ahead of current market consensus at £73m after strong demand for tablet devices drove the group to better than expected third quarter sales at its Argos business. Petropavlovsk followed closely behind after the mining group said gold production increased 13% in 2012 and realised gold prices rose 3%.Dragging behind in the race was Stobart Group which fell following the multimodal logistics company's announcement that operating performance for the current year could be "slightly lower" than market expectations.New World Resources A Shares also dropped after the mining group said it expected a decline in its average agreed thermal coal price in 2013, and pricing pressure to persist in the coking coal.FTSE 250 - RisersHome Retail Group (HOME) 135.40p +11.44%Petropavlovsk (POG) 403.40p +8.91%Computacenter (CCC) 446.50p +6.31%Moneysupermarket.com Group (MONY) 179.50p +4.97%Bumi (BUMI) 328.40p +4.52%Senior (SNR) 205.00p +3.69%Pace (PIC) 220.70p +3.66%Intermediate Capital Group (ICP) 348.20p +3.14%International Personal Finance (IPF) 392.90p +3.12%EnQuest (ENQ) 123.10p +3.10%FTSE 250 - FallersStobart Group Ltd. (STOB) 90.10p -5.21%New World Resources A Shares (NWR) 298.40p -4.57%SDL (SDL) 499.50p -2.63%Grainger (GRI) 123.20p -2.38%Centamin (DI) (CEY) 55.45p -2.12%CSR (CSR) 349.20p -2.10%Domino Printing Sciences (DNO) 631.00p -2.02%Hiscox Ltd. (HSX) 455.10p -1.56%United Drug (UDG) 257.80p -1.49%Amlin (AML) 380.40p -1.48%RD