Temporary power supplier Aggreko leads the way after saying trading has been better than expected during the last three months of the year, leaving 2009 operating profit up by more than a quarter.Punch Taverns is the heaviest faller. The pub group is still under the cosh after a gloomy trading statement on Wednesday that was followed by a shareholder revolt against the board's proposals for director remuneration. Elsewhere, Hochschild Mining is higher after saying it has upped its stake in Mexican gold miner Gold Resource Corporation to 27% through a $16m private placement.Port operator Forth Ports is sinking slightly after saying it expects full year results to be at the lower end of expectations due to weak trading in its Nordic recycling division and in its container services operations at Tilbury port near London.But shares in John Wood Group recover after falling yesterday when the oil and gas facilities service provider said it believes 2009 earnings will be in line with expectations.FTSE 250 - RisersAggreko (AGK) 876.50p +5.03%Ecofin Water & Power Opportunities (ECWO) 148.00p +4.59%TR Property Inv Trust Sigma Shares (TRYS) 62.75p +4.50%Xchanging (XCH) 215.00p +4.37%DSG International (DSGI) 36.66p +4.00%Melrose Resources (MRS) 302.90p +3.56%John Wood Group (WG.) 298.20p +3.51%Hochschild Mining (HOC) 328.30p +3.50%Sports Direct International (SPD) 102.40p +3.17%Telecity Group (TCY) 394.70p +2.63%FTSE 250 - FallersPunch Taverns (PUB) 69.25p -4.22%Euromoney Institutional Investor (ERM) 421.60p -2.92%Grainger (GRI) 124.10p -2.82%Salamander Energy (SMDR) 280.00p -2.51%Mitie Group (MTO) 219.00p -2.41%Forth Ports (FPT) 1,080.00p -2.09%Dairy Crest Group (DCG) 341.30p -2.07%Millennium & Copthorne Hotels (MLC) 362.60p -2.00%Tullett Prebon (TLPR) 267.70p -1.94%Hikma Pharmaceuticals (HIK) 512.50p -1.91%