As the ETF industry has expanded in recent years, a significant portion of growth has come from the tremendous rise in popularity of exchange-traded commodity products. In addition to broad-based funds such as DBC or DJCI, several commodity-specific products have accumulated billions of dollars in assets, and several were even among the very largest of [...] Related Stories: Physical Platinum ETF (PPLT), Palladium ETF (PALL) Launch The Definitive Guide To Platinum ETFs: Platinum ETF Investing 101 Palladium, Platinum ETFs Near Launch