METALS-Copper prices up on supply concerns By: Reuters: Company News April 21, 2017 at 08:30 AM EDT * LME/SHFe arb: http://tmsnrt.rs/2oQ5nm2 (Updates throughout, moves dateline from Sydney) Read More >> Related Stocks: Freeport-McMoRan Rio Tinto Plc ADR Vedanta Ltd ADR