DS Smith, the packaging company, was retreating one day after warning on concerns over its Paper business, which it said continued to suffer a 'poor' performance during the three months ended January 31st. Shares in mining group Bumi rose strongly on Friday. The group this morning unveiled details of board changes at its subsidiary PT Berau Coal Energy TbK (BCE), including the resignation of Rosan Roeslani as President Director. Halma also rose after Barclays increased its target price from 430p to 540p and upgraded the stock to overweight. FTSE 250 - RisersBumi (BUMI) 347.90p +7.38%Imagination Technologies Group (IMG) 521.00p +6.11%New World Resources A Shares (NWR) 253.90p +5.35%Halma (HLMA) 517.00p +3.90%Henderson Group (HGG) 169.20p +3.42%Centamin (DI) (CEY) 53.80p +3.36%Jupiter Fund Management (JUP) 358.60p +3.25%SIG (SHI) 149.70p +2.89%Premier Farnell (PFL) 232.50p +2.88%WH Smith (SMWH) 710.00p +2.75%FTSE 250 - FallersSmith (DS) (SMDS) 223.60p -3.37%Salamander Energy (SMDR) 202.20p -2.69%Laird (LRD) 235.00p -2.69%Big Yellow Group (BYG) 377.00p -2.38%Kenmare Resources (KMR) 32.83p -2.35%QinetiQ Group (QQ.) 200.10p -2.29%African Barrick Gold (ABG) 232.70p -2.23%Telecity Group (TCY) 907.50p -2.16%Drax Group (DRX) 619.00p -2.06%Petropavlovsk (POG) 248.70p -1.78%