Copper prices in the United States are published by CME Group. Copper is traded on the London Metal Exchange, New York Mercantile Exchange and Shanghai Metal Exchange, according to The Street. Copper traded on the New York Mercantile Exchange has fallen in price from 2011 to 2015, Nasdaq data shows.
Futures are contracts to purchase goods for a set price and quantity at a set date in the future, according to Investopedia. When futures prices drop, it indicates that investors expect prices to be lower in the future. The New York Mercantile Exchange trades copper in per-pound units. In the United States, copper contracts for July 2015 were trading near $3 per pound in May 2015, and dropped to $2.38 per pound at the end of July, according to CME Group.
Three-month copper futures trading on the London Metal Exchange declined quickly on July 24, 2015, reports the Wall Street Journal, and reached their lowest point in years. Copper is traded in metric tons on the London Metal Exchange, and it dropped over $1,800 per metric ton in price from 2014 to July 2015. Copper prices could remain low through 2018 due to a combination of a strong U.S. dollar, the depressed Chinese manufacturing sector, and increased copper supplies.