Oil group Heritage jumped after saying that it would sell Genel Energy its 26% interest in the production sharing contract relating to the Miran Block in Iraq. Sector peer Ophir Energy also gained after saying that it has successfully encountered gas at the Fortuna East-1 step out exploration well on Block R, Equatorial Guinea, as well as in the deeper Viscata exploration target. Persimmon was heading in the opposite direction despite a strong set of results after saying it expects conditions in the UK housing market to remain challenging. FTSE 250 - RisersHeritage Oil (HOIL) 197.00p +17.19%Aquarius Platinum Ltd. (AQP) 39.78p +8.01%African Barrick Gold (ABG) 466.10p +7.64%Hochschild Mining (HOC) 440.60p +4.90%Ophir Energy (OPHR) 550.00p +4.66%Daejan Holdings (DJAN) 3,009.00p +4.12%Lonmin (LMI) 634.50p +4.02%Dechra Pharmaceuticals (DPH) 499.10p +3.94%Petra Diamonds Ltd.(DI) (PDL) 106.00p +3.92%Savills (SVS) 403.00p +3.87%FTSE 250 - FallersParagon Group Of Companies (PAG) 186.00p -2.11%NMC Health (NMC) 193.70p -2.07%Persimmon (PSN) 691.00p -1.99%Go-Ahead Group (GOG) 1,303.00p -1.88%Wetherspoon (J.D.) (JDW) 461.10p -1.79%Premier Farnell (PFL) 190.60p -1.75%Salamander Energy (SMDR) 205.30p -1.72%Interserve (IRV) 349.60p -1.52%St James's Place (STJ) 359.60p -1.43%Genus (GNS) 1,318.00p -1.42%NR