Monday's Big 3 is focused on the commodity space, as Dan Russo turns to three products he sees holding potential in the coming weeks and months. He walks investors through his key takeaways on the iShares S&P GSCI Commodity-Indexed Trust ETF (GSG), the Sprott Physical Gold Trust ETF (PHYS), and the VanEck Gold Miners ETF (GDX). Rick Ducat highlights the support and resistance areas to watch in the charts.