Shares in Game have slumped after Lisa Morgan stepped down as the chief executive as the video game retailer revealed a sharp fall in profits in the year to January 31.Shares in the CD and DVD retailer HMV have also slipped back.Car and aeroplane parts supplier Senior is motoring ahead after saying it expects profits for 2010 to exceed expectations after trading in the three months to March 31 got a lift from favourable currency movements and cost control and efficiency improvements.Strong results from the US tech giant Apple have given Imagination Technologies, whose intellectual property is thought to be used in the iPhone, a boost.Wealth manager St James's Place is wanted after it enjoyed record sales of single products and a strong inflow of new money in the three months to March as ISA and unit trust sales took off.Bookmaker Ladbrokes moves ahead after it said it expects to receive £80m from the UK tax authorities after reaching a settlement covering substantially all the outstanding items in the tax years through to December 2007.FTSE 250 - RisersSenior (SNR) 119.00p +7.40%Ashtead Group (AHT) 113.90p +4.02%Imagination Technologies (IMG) 260.30p +3.33%Croda International (CRDA) 981.50p +3.21%Filtrona PLC (FLTR) 215.20p +3.02%Spirax-Sarco Engineering (SPX) 1,491.00p +2.83%Lamprell (LAM) 273.80p +2.74%Ladbrokes (LAD) 161.50p +2.60%St James's Place (STJ) 279.00p +2.57%Punch Taverns (PUB) 97.90p +2.41%FTSE 250 - FallersGame Group (GMG) 90.50p -10.66%HMV Group (HMV) 81.20p -4.41%Galiform (GFRM) 75.00p -3.41%Balfour Beatty (BBY) 293.20p -3.07%Dunedin Income Growth Inv Trust (DIG) 194.00p -2.76%TalkTalk Telecom Group (TALK) 126.50p -2.54%IG Group Holdings (IGG) 413.50p -2.48%St. Modwen Properties (SMP) 185.30p -2.47%Hargreaves Lansdown (HL.) 366.50p -2.45%JKX Oil & Gas (JKX) 301.90p -2.39%