They claim mounting investigations into the firm’s dealings in the DRC, where it’s heavily invested, has made the stock collapse and investors may seek compensation for the losses caused by it.
The world’s No.2 miner is selling its 40% in the giant Grasberg mine, the world’s second largest copper operation, to Indonesia’s state mining company PT Inalum.
A mineral sands operation on the South African coast run by Rio Tinto has been closed since Friday due to violent community protests which saw a security guard killed earlier this week, the company and a union said on Wednesday.
Even after two years of gains, industrial metals trade well below 10-year mean prices. Silver looks cheap, but gold, crude may be fully priced already.