Precision tool maker Renishaw leapt into the top spot after saying that despite continuing global macroeconomic headwinds it has seen good growth over the year to date and has started to see signs of an upturn in the electronics market. Also wanted was Babcock, the engineering support services company, as it said it expects earnings in the current year to be ahead of previous expectations, thanks to its bulging order book.Taking a hit was Spirax-Sarco Engineering after unfavourable exchange rate movements seriously slowed the organic growth sales rate this year at the peristaltic pumps specialist. The group said the organic sales growth rate for the first four months of the year was 6%, but total sales were up just 3%, largely due to unfavourable exchange rate movements which have become more pronounced in recent weeks. FTSE 250 - RisersRenishaw (RSW) 1,472.00p +9.77%Babcock International Group (BAB) 868.50p +8.70%Soco International (SIA) 266.50p +4.55%Home Retail Group (HOME) 81.25p +3.44%Supergroup (SGP) 329.20p +2.71%F&C Asset Management (FCAM) 67.50p +2.04%Greggs (GRG) 496.00p +1.99%Laird (LRD) 187.60p +1.90%Atkins (WS) (ATK) 677.50p +1.73%Ophir Energy (OPHR) 515.50p +1.48%FTSE 250 - FallersDixons Retail (DXNS) 14.64p -8.21%Aquarius Platinum Ltd. (AQP) 93.50p -7.88%Taylor Wimpey (TW.) 41.85p -6.33%Kenmare Resources (KMR) 43.05p -6.21%Spirax-Sarco Engineering (SPX) 2,038.00p -5.60%Logica (LOG) 66.40p -4.80%Persimmon (PSN) 547.00p -4.79%Petra Diamonds Ltd.(DI) (PDL) 134.20p -4.62%Petropavlovsk (POG) 394.10p -4.37%Barratt Developments (BDEV) 118.60p -4.35%NR