Keller, the engineer focused on the preparation of ground that is to be built on, is higher despite saying it has seen no pick-up in its struggling US business.Keller, generates around two-fifths of its revenue in the world's biggest economy, warned six weeks ago of major headaches there and today said there have been no significant changes to the group's trading or outlook since then.McBride is still taking a pasting. The company, which makes toothpaste and other such household items for supermarkets to sell under their own name, said yesterday that it expects full year revenue growth to be flat after a weak final quarter and as raw material prices continue to rise.Imagination Technologies has been enjoying strong gains in recent months, but since the graphics chip developer reported full-year results that slightly missed expectations on Wednesday, the shares have been drifting lower and are down again today. FTSE 250 - RisersFiltrona PLC (FLTR) 217.40p +3.72%Keller Group (KLR) 569.00p +3.45%Hansen Transmissions International (HSN) 80.80p +2.21%Dairy Crest Group (DCG) 391.70p +2.14%Stagecoach Group (SGC) 194.30p +2.05%Forth Ports (FPT) 1,190.00p +1.88%Hikma Pharmaceuticals (HIK) 714.50p +1.85%Hochschild Mining (HOC) 315.70p +1.74%Drax Group (DRX) 382.00p +1.68%BBA Aviation (BBA) 193.70p +1.68%FTSE 250 - FallersMcbride (MCB) 128.00p -8.44%Halfords Group (HFD) 523.50p -4.12%Game Group (GMG) 70.30p -3.83%Taylor Wimpey (TW.) 30.53p -3.72%RPS Group (RPS) 183.30p -3.68%Punch Taverns (PUB) 64.30p -3.31%Imagination Technologies (IMG) 275.30p -3.10%JKX Oil & Gas (JKX) 236.60p -3.07%Barratt Developments (BDEV) 105.00p -2.96%Supergroup (SGP) 712.00p -2.86%