Savills' share price was looking up after the real estate advisor posted a 39% surge in half year profit and said it remains well positioned for long term growth across its core regions.Pre-tax profit rose to £20m for the six months ended 30 June 2011 from £14.4m in 2010. Group revenue advanced 10% to £335.8m. The troubles continue for Thomas Cook, which saw its share take a nose dive yet again.The company issued a profits warning on 12 July, since when its shares have tumbled from 122.7p to less than 50p now. Chief executive Manny Fontenla-Novoa fell on his sword at the beginnng of August, and the company is still looking for a replacement.FTSE 250 - RisersPerform Group (PER) 169.10p +5.69%BH Global Ltd. USD Shares (BHGU) 11.26 +1.35%Savills (SVS) 316.60p +1.31%Shanks Group (SKS) 116.30p +0.95%Michael Page International (MPI) 373.00p +0.70%Euromoney Institutional Investor (ERM) 610.00p +0.66%BH Macro Ltd. GBP Shares (BHMG) 1,918.00p +0.63%Unite Group (UTG) 166.00p +0.61%Telecom Plus (TEP) 640.00p +0.55%Spirit Pub Company (SPRT) 45.21p +0.47%FTSE 250 - FallersThomas Cook Group (TCG) 47.99p -8.85%Kenmare Resources (KMR) 40.88p -8.40%Ashtead Group (AHT) 106.30p -7.89%International Personal Finance (IPF) 242.00p -7.35%Cookson Group (CKSN) 492.60p -6.44%Aquarius Platinum Ltd. (AQP) 243.50p -6.27%Ferrexpo (FXPO) 343.60p -6.15%Senior (SNR) 151.20p -5.97%Imagination Technologies Group (IMG) 313.90p -5.82%Regus (RGU) 75.25p -5.70%NR