The Price to Earnings (P/E) ratio, a key valuation measure, is calculated by dividing the stock's most recent closing price by the sum of the diluted earnings per share from continuing operations ...

Shares of Rio Tinto PLC RIO rose 2.57% to £50.26 Thursday, on what proved to be an all-around favorable trading session for the stock market, with the FTSE 100 Index UKX rising 1.21% to 8,727.28.

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A number of people have been killed in Canada’s Northwest Territories after a plane carrying Rio Tinto workers to a diamond mine crashed following takeoff.