Dan Russo takes us through today’s Big 3 by highlighting trends in the S&P 500 (SPX) as the index trades just under its all-time high. He also highlights the iShares Core US Aggregate Bond ETF (AGG) and the iShares S&P GSCI Commodity-Indexed Trust (GSG), believing it's important investors keep an eye on bonds and commodities in the current market environment. Charles Schwab's Kevin Horner walks us through the technical trends in all three charts.