TheoTrade's Don Kaufman walks us through today's Big 3 trades by highlighting Caterpillar's (CAT) massive 50% year-to-date rally and why it's trading like a tech stock. He discusses the SPDR Gold Shares ETF (GLD), saying the inflation backdrop offers bullish momentum for metals. In eBay Inc. (EBAY), he believes the valuation has reached its peak, for now. Don offers example options trades for his picks while Rick Ducat walks us through the key technicals in the stock charts.