Canadian miner Barrick Gold has abandoned plans to sell its majority stake in London-listed African Barrick Gold (ABG) to a Chinese buyer, causing shares to plunge. In August, Barrick announced it had entered into discussions with China National Gold Group Corporation to sell its 73.9 per cent stake in ABG. Debenhams fell after Panmure Gordon cut its target price from 118p to 112p and kept its hold rating. Meanwhile, Interserve rose after saying trading for 2012 was in line with expectations following a number of contract wins. Ahead of its annual results to be unveiled in February, the international support services and construction group gave a taste of what to expect. Ferrexpo, the iron ore company with assets in Ukraine, was also on the rise after it posted a 2.6% increase in annual pellet production from own ore at 9.3m tonnes, compared to 9.1m tonnes in 2011. FTSE 250 - RisersCentamin (DI) (CEY) 43.54p +7.37%Interserve (IRV) 422.00p +5.90%Bumi (BUMI) 305.10p +5.75%Ferrexpo (FXPO) 278.70p +3.68%Man Group (EMG) 90.60p +3.42%Ocado Group (OCDO) 89.40p +2.76%Bovis Homes Group (BVS) 606.00p +2.54%Kentz Corporation Ltd. (KENZ) 397.00p +2.32%Close Brothers Group (CBG) 904.50p +2.26%Barratt Developments (BDEV) 216.70p +2.17%FTSE 250 - FallersAfrican Barrick Gold (ABG) 353.30p -20.43%Debenhams (DEB) 108.80p -7.09%Michael Page International (MPI) 398.20p -3.98%Dechra Pharmaceuticals (DPH) 621.00p -3.42%Fenner (FENR) 411.90p -3.26%Renishaw (RSW) 1,888.00p -3.18%Domino Printing Sciences (DNO) 599.50p -2.99%Unite Group (UTG) 276.10p -2.92%London Stock Exchange Group (LSE) 1,120.00p -2.78%Regus (RGU) 105.80p -2.67%NR