Supergroup's weak spell continues. The fashion group behind the ultra-hip Superdry label has enjoyed a stellar run since listing, but has been on a downward trend since warning on margins earlier this month.Elsewhere in companies that floated this year, grocery delivery group Ocado and online betting group Betfair are strong.Bricks-and-mortar bookmaker William Hill is going well too, while house builder Taylor Wimpey is the top riser. FTSE 250 - RisersTaylor Wimpey (TW.) 30.98p +4.42%William Hill (WMH) 172.10p +3.61%St. Modwen Properties (SMP) 163.20p +2.90%St James's Place (STJ) 275.10p +2.73%3i Infrastructure (3IN) 123.90p +2.48%Capital & Counties Properties (CAPC) 150.30p +2.45%Ocado Group (OCDO) 170.70p +2.22%Exillon Energy (EXI) 325.00p +2.20%Betfair Group (BET) 990.00p +2.06%Unite Group (UTG) 204.70p +1.94%FTSE 250 - FallersMichael Page International (MPI) 548.50p -3.01%Tate & Lyle (TATE) 522.50p -2.43%Supergroup (SGP) 1,203.00p -2.35%BTG (BGC) 230.60p -1.91%Howden Joinery Group (HWDN) 101.90p -1.74%Imagination Technologies Group (IMG) 365.90p -1.59%Redrow (RDW) 130.50p -1.58%CPP Group (CPP) 295.30p -1.57%Brewin Dolphin Holdings (BRW) 157.70p -1.44%Cookson Group (CKSN) 650.00p -1.44%