When it comes to today's Big 3, Dan Deming explains why he's "cautiously optimistic" on Uber Technologies (UBER) for a bullish run. He notes Valero Energy's (VLO) opportunity to capture further upside even as the energy sector lags. Walmart's (WMT) higher lows give him confidence the retail giant can reach new all-time highs. Dan offers example options trades for his Big 3 while Kevin Green gives investors insight into technical trends through the charts.