Rentokil Initial is a top riser. The pest control business has proved quite a catch over the past 12 months and business continued to improve in the first quarter when profit grew faster than analysts expected.Laundry and workwear group Davis Service Group moves ahead after saying it has been in line with expectations in the first quarter with revenues broadly in line with the corresponding period of 2009.Household Products group McBride is lower having posted gains yesterday. FTSE 250 - RisersBlueBay Asset Management (BBAY) 377.80p +5.50%Hansteen Holdings (HSTN) 77.95p +4.63%Ecofin Water & Power Opportunities (ECWO) 149.00p +4.56%Melrose Resources (MRS) 307.20p +4.17%Morgan Crucible (MGCR) 216.00p +3.30%F&C Asset Management (FCAM) 65.55p +2.82%Premier Farnell (PFL) 244.60p +2.82%Davis Service Group (DVSG) 434.10p +2.79%Brewin Dolphin (BRW) 145.90p +2.39%JKX Oil & Gas (JKX) 266.00p +2.39%FTSE 250 - FallersRentokil Initial (RTO) 127.50p -4.06%GKN (GKN) 140.70p -3.10%Mcbride (MCB) 188.60p -3.03%SVG Capital (SVI) 163.80p -2.62%888 Holdings (888) 78.05p -2.44%Cookson Group (CKSN) 564.00p -2.08%Mondi (MNDI) 448.10p -1.88%Dana Petroleum (DNX) 1,212.00p -1.86%Inchcape (INCH) 34.40p -1.74%Hargreaves Lansdown (HL.) 351.00p -1.60%