Shares in Stobart speed ahead after the transport and logistics group bagged a distribution contract for Tesco's new 1.2m sq ft import centre in Middlesbrough worth about £25m a year.Shares in IG Group are higher again after the spread-betting firm said yesterday that profits for the year climbed by 15%.Turning to the fallers, Marston's slips back after the brewer and pub group said just over 91% of shareholders backed its £176m cash call.FTSE 250 - RisersMondi (MNDI) 229.00p +6.51%Cranswick (CWK) 630.50p +3.36%Rightmove (RMV) 386.50p +3.34%IG Group Holdings (IGG) 284.25p +2.90%Hargreaves Lansdown (HL.) 210.00p +2.44%SThree (STHR) 199.00p +2.31%Misys (MSY) 180.50p +2.27%Henderson Group (HGG) 97.00p +2.11%Genus (GNS) 520.00p +2.06%Stobart Group (STOB) 103.00p +1.98%FTSE 250 - FallersHochschild Mining (HOC) 247.25p -6.26%Moneysupermarket.com (MONY) 57.00p -4.60%DS Smith (SMDS) 67.75p -4.58%Aquarius Platinum Ltd. (AQP) 215.25p -4.44%Cookson Group (CKSN) 290.25p -3.73%Chloride Group (CHLD) 138.00p -3.50%JPMorgan Indian Inv Trust (JII) 323.50p -3.29%Marston's (MARS) 88.75p -3.01%Tullett Prebon (TLPR) 350.25p -2.98%Halfords Group (HFD) 325.75p -2.91%