Growing confidence in an upswing in consumer demand in the US lifted News Corporation stocks in early trade, although gains were limited by reports of a large sale of shares by the Murdoch family trust. Trading was enlivened by proposals for a merger between Orogen Minerals, a nickel producer based in Papua New Guinea, and energy producer Oil Search. Orogen shares climbed more than 8% on news of the proposed deal, which would create an energy group valued at about £430 million, and Oil Search crammed on 7%.