Copper has risen to its highest levels since July 2008.
The International Copper Study Group just said global demand for copper will rise by 4.49% in 2011.
BMO said it anticipates a global supply deficit of some 280,000 metric tons - with a price forecast of $3.70 a pound - for 2011.
Australian equity research firm Resource Capital Research (RCR) said it expects the copper market to move from a small surplus in 2010 to a deficit of around 400,000 tonnes by 2011.
They also expect global yearly demand growth to be between 3 and 5 percent which would represent an incremental annual consumption increase of 600,000 to 900,000 tonnes.