Shares in electrical retailer DSG International are higher. The Curry's and PC World owner saw an improvement in trading in the 28 weeks to May 1 as the economic outlook improved and said it was looking to this year's football World Cup for an extra boost.Premier Oil is also wanted. The oil group has seen average daily production of 47,100 barrels of oil equivalent (boepd) between January 1 and April 1, up from an average of 44,200 boepd over the whole of 2009, but expects the figure to come back down due to summer maintenance programmes.Business publisher Euromoney Institutional Investor has set itself the challenge of returning to revenue growth having managed to lift profits in the face of declining sales. The shares have moved ahead.Shares in construction site ground preparation specialist Keller slumped by a fifth as it warned problems in the US would hit its results hard this year.Shares in inter-dealer broker Tullett Prebon declined after it said revenue fell 12% and as it confirmed talks with a potential bidder have ended.Shares in Trinity Mirror are down too. The newspaper publisher said trading remained volatile in the period up to May 2, a factor that was exacerbated in the run up to the General Election.FTSE 250 - RisersPremier Oil (PMO) 1,251.00p +6.11%DSG International (DSGI) 30.02p +6.08%Bovis Homes Group (BVS) 413.90p +4.71%Travis Perkins (TPK) 816.50p +4.55%Eaga (EAGA) 137.10p +4.50%Euromoney Institutional Investor (ERM) 551.50p +3.86%SVG Capital (SVI) 161.50p +3.86%BTG (BGC) 171.70p +3.75%Intermediate Capital Group (ICP) 267.00p +3.57%EnQuest (ENQ) 98.15p +3.32%FTSE 250 - FallersKeller Group (KLR) 627.00p -19.87%Tullett Prebon (TLPR) 313.50p -13.40%Trinity Mirror (TNI) 124.20p -10.52%Melrose Resources (MRS) 292.50p -2.47%Drax Group (DRX) 342.50p -2.03%SDL International (SDL) 466.50p -1.93%HMV Group (HMV) 63.35p -1.86%Yell Group (YELL) 49.20p -1.60%Balfour Beatty (BBY) 272.00p -1.59%Redrow (RDW) 136.90p -1.58%