The rebound in exchange traded funds following copper futures and miners is a good sign for the global economy although they remain slightly negative for 2011.

Copper experienced a healthy run last year as global economies began to recover. However, the commodity was weak earlier this year on debt problems in Europe and a slowdown in China’s economy.

The red metal is seen as a leading indicator for the global economy, so its recent bounce is an encouraging sign because copper has many construction and industrial applications.

The iPath Dow Jones-UBS Copper ETN (NYSEArca: JJC) is down 1.5% year-to-date, and First Trust ISE Global Copper (NasdaqGM: CU) is down 0.4% year-to-date.

The World Bureau of Metal Statistics calculated that the global copper market had a surplus of 74,100 tons in the first five months of the year, as compared to a 54,000 ton total surplus for 2010, reports Karen Norton for Reuters.

In a Reuters survey, the analysts projected, on average, copper prices for the year will be around $9,570 a ton, according to IOL Business. Current copper prices sit just above $9,600 a ton as investors weigh in on macro-economic sentiment from the Eurozone financial problems and concern over the U.S. debt-ceiling.

“With current base metal prices already reflecting strong growth prospects for the emerging economies, we expect macroeconomic developments in the U.S. and euro area to be increasingly important,” commented Benjamin Westmore, commodity economist at National Australia Bank.

Observers have also been keeping tabs on China, which accounts for around 40% of global demand.

“The demand in the Chinese markets has not gone down, but China has started using its stockpiles of copper instead of importing the metal,” Commerzbank analyst Daniel Briesemann remarked. “But that will change, as recent data suggests that copper imports have increased over the last four months.”

“The fundamentals of copper are still relatively strong, there are a number of mines where production has declined,” stated independent consultant Angus MacMillan, according to Reuters. “But I don’t think the market will go much higher in the short term.”

“Looking at the demand side of the market, we really do not see support for current price levels,” said Neil Buxton, managing director of GFMS Consulting.

A tight market and delays in supplies, more notably from Chilean mines where protests halted production, have supported copper prices; however, “while most analysts mis-focus on Chilean supply problems, mine supply growth is actually rising at a growing rate, particularly from Africa and China,” according to Societe Generale. It estimates mining supply will grow by 5.2% this year.

For more information on copper, visit our copper category.

First Trust ISE Global Copper

Max Chen contributed to this article.