Gold, Oil Weigh on Commodity ETFs: ‘Supercycle’ Over?

Weakness in gold, oil and other commodities has pushed natural resources ETFs such as PowerShares DB Commodity Index Tracking Fund (NYSEArca: DBC) into the red this year. Commodity ETFs could see more pain if the decade-long rally or “supercycle” is over as China’s economic growth slows. Ruchir...