Investors interested in tracking base metal prices should go no further than the London Metal Exchange ( The LME is the world’s largest non-ferrous metal exchange, which manages over $2 trillion worth of traded contracts annually. The LME publishes inventory charts for 3 months to 27 months on base metals, which is a handy gauge for what speculators and hedgers are thinking. For instance, if the 3-month price is less than the cash price then the expectation for the base metal in question is that it’s headed for a price fall. Another popular website for base metals is and for precious metals,