Turquoise Hill climbs on speculation Rio may take it private

Turquoise Hill Resources Ltd. soared amid speculation that its controlling shareholder  Rio Tinto Group is preparing for a commodity-price recovery by increasing its stake in the company. Rio Tinto has hired Goldman Sachs Group Inc. to advise it as the world’s second-largest miner looks into the possibility of taking Turquoise Hill private, a person with knowledge of the matter said. The news was reported earlier by the Sunday Times.