Commodities: Copper and culpability

The London Metal Exchange, the world's top copper exchange, rode out the drama of Yasuo Hamanaka and Sumitomo's losses. But is it crying out for reform, and is it an efficient means of price discovery? Christopher Spink reports

On May 9, three-month copper futures – the London Metal Exchange’s and hence the world’s benchmark – reached $2,715.50 a tonne. It was the highest price of the year. On the surface, it looked like a sort of triumph – with the LME’s turnover up 700% since 1987 and its business far outweighing that of its major rivals, the exchange was surely as good an instrument of price formation as was going to be found in an imperfect world.

On

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