Driven higher by the continued rise of the price of gold, African Barrick Gold rose to the top of the FTSE today. Sector peer Centamin was also on the up. PayPoint moved higher as investors recovered from the huge £27.1m sale made by David Morrison, a non-executive director, last week. Premier Oil was driven higher by rising crude prices, which have soared in recent times on the back of the ongoing violence in Iraq, which has heightened concerns about the knock-on effect on supply.Mitchells & Butlers (M&B) fell despite broker Numis Securities giving a thumbs up to its decision to take over 173 pubs previously owned by the Orchid Group estate. Numis has maintained a 'buy' rating for the pub group and upgraded its forecasts after the £266m acquisition.888 Holdings extended Friay's losses, falling into the bottom spot. FTSE 250 - RisersAfrican Barrick Gold (ABG) 228.30p +4.53%PayPoint (PAY) 1,138.00p +4.12%Infinis Energy (INFI) 219.00p +3.84%Debenhams (DEB) 73.30p +2.88%Premier Oil (PMO) 351.60p +2.84%Polymetal International (POLY) 549.00p +2.04%Centamin (DI) (CEY) 63.25p +1.69%Ocado Group (OCDO) 358.90p +1.67%AL Noor Hospitals Group (ANH) 1,010.00p +1.56%Kazakhmys (KAZ) 279.40p +1.42%FTSE 250 - Fallers888 Holdings (888) 111.00p -5.53%Supergroup (SGP) 947.50p -5.25%Evraz (EVR) 93.20p -3.97%Ferrexpo (FXPO) 124.30p -3.94%Dignity (DTY) 1,349.00p -3.23%Rathbone Brothers (RAT) 1,994.00p -3.20%Regus (RGU) 190.40p -3.15%Fisher (James) & Sons (FSJ) 1,273.00p -3.12%St. Modwen Properties (SMP) 356.10p -3.10%Howden Joinery Group (HWDN) 298.90p -2.83%NR