METALS-Copper pulls back from 3-year high as speculators take profits By: Reuters: Company News August 22, 2017 at 12:14 PM EDT * LME/ShFE arb: http://tmsnrt.rs/2oQ5nm20 (Updates with closing prices) Read More >> Related Stocks: Bhp Billiton Ltd ADR Freeport-McMoRan