By Frank Holmes via Iris.xyz Of the 14 commodities we track closely at U.S. Global Investors, wheat rose to take the top spot for the first half of 2017, returning more than 25 percent. The grain was followed closely by palladium—used primarily in the production of catalytic converters—which gained 24 percent. Between the start of the…Click to read more at ETFtrends.com.
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