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Strategist: Here's the best way to trade copper

Factory workers secure large copper tube coils that will be wrapped and shipped out.
Michael S. Williamson | The Washington Post | Getty Images
Factory workers secure large copper tube coils that will be wrapped and shipped out.

Editor's Note: Jeffrey A. Hirsch is editor-in-chief of the Stock Trader's Almanac, which popularized the "sell in May" market strategy.

Copper's historical tendency is to make a major seasonal bottom in December and then post peaks in April or May.

This pattern may be due to the buildup of inventories by miners and manufacturers as the construction season begins in late winter to early spring. Automakers, which are consumers of the commodity, also set quotas for the production of new car models during the mid to late summer.

On the back of this trend, here are several investment strategies on how to trade copper.