$Northern Dynasty Minerals (NAK.US)$ Due to supply shortages and a sharp rise in copper prices, Goldman Sachs first called for a target price of $10,500 for copper futures last week, and now Citic Securities is even more optimistic! On Monday, February 22nd, in the early Asian market, COMEX copper futures rose more than 1% to $4.1195/pound, reaching a new high since 2011; LME copper broke through $9,000, the first time since 2011.