Cardboard and paper supplier DS Smith is higher after it said first half pre-tax profits will be 'substantially' ahead of expectations, although lower than last year's levels.Services, maintenance and building group Interserve is going well after announcing it has won a £40m contract to create an industrial development in Jebel Ali through its Dubai.Pub group Punch Taverns is deep in the red after it slumped into an annual loss of over £400m as it took a £663m charge for write-downs on the value of its pub estate. Fellow tenanted pub group Enterprise Inns is also struggling.FTSE 250 - RisersDS Smith (SMDS) 133.20p +12.12%Interserve (IRV) 255.30p +7.36%Petropavlovsk (POG) 1,190.00p +6.16%Homeserve (HSV) 1,705.00p +6.10%Robert Wiseman (RWD) 469.70p +5.55%St. Modwen Properties (SMP) 237.00p +5.33%Premier Farnell (PFL) 150.50p +5.32%Croda International (CRDA) 762.00p +5.10%John Wood Group (WG.) 343.10p +4.86%CSR (CSR) 481.70p +4.72%FTSE 250 - FallersPunch Taverns (PUB) 98.25p -15.23%Enterprise Inns (ETI) 118.00p -6.20%Ladbrokes (LAD) 136.10p -1.87%Hiscox (HSX) 337.10p -1.43%Shaftesbury (SHB) 384.60p -1.38%Northumbrian Water Group (NWG) 233.00p -1.23%Avis Europe (AVE) 29.90p -1.16%Euromoney Institutional Investor (ERM) 379.90p -1.12%BBA Aviation (BBA) 163.30p -1.03%Chaucer Holdings (CHU) 50.50p -0.98%