An employee takes inventory of bars of copper.
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Copper prices declined to levels not seen since 2009 and are down more than 7 percent for the year on worries over demand destruction in China.
One of the oldest market adages is how the metal has a Ph.D. in economics. Many investors believe copper prices are a leading indicator of future economic trends with its use in a wide variety of sectors including home construction, industrial manufacturing and consumer products.
Investors may wonder which companies are affected by such volatility in copper prices. Using Kensho, a quantitative tool used by hedge funds, CNBC Pro found the top and worst performing names when copper prices fall by at least 5 percent in one week.
Here is what we found.
