Copper futures traded flat on Monday as US dollar strengthened marginally against major currencies overseas due to expectations that the US Federal Reserve would maintain its tight monetary policy stance. Meanwhile, data from the world's largest copper producer Chile presented a mixed picture, with output declining at Codelco but increasing at mines like Escondida and Collahuasi.
Copper futures for July delivery unchanged at $4.6625 a pound on the Comex metals division of New York Mercantile Exchange.