Exchange traded funds indexed to copper prices and miners have vaulted about 20% in a week with investors turning more bullish on the global economy as Europe tries to make its debt crisis go away.

The iPath Copper ETN (NYSEArca: JJC), First Trust ISE Global Copper Index Fund (NYSArca: CU) and Global X Copper Miners ETF (NYSEArca: COPX) are all more than 20% over the past five trading sessions.

The funds have also busted through their 50-day moving averages during the sharp rebound in prices. [Copper ETFs in Biggest Rally Since 2009]

Copper was rising Thursday after European leaders reached agreements to expand the bailout fund and haircuts on Greek debt. [Debt Deal]

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