SYDNEY—Rio Tinto PLC said it would buy back a further $1 billion in stock as it recorded a 33% rise in first-half net profit and raised its dividend by 15%, aided by recovering prices of some commodities.
The world’s second-biggest miner by market value, behind BHP Billiton Ltd., on Wednesday reported a profit of $4.38 billion for the six months through June, up from a net profit of $3.31 billion a year earlier. It was the miner’s most profitable first half since 2014.
...