It's a big week for stocks on the Cheddar 50 Index. Chipotle, Amazon and Google are expected to report earnings this week. Many Robinhood investors are bullish on Amazon ahead of earnings Thursday due to its purchase of Whole Foods, co-founder Baiju Bhatt says. Over the past week, retail investors on Robinhood were 1.4x more likely to buy Amazon than sell it. This is the reverse of how they traded ahead of Amazon's Q2 earnings, when they were 1.09x more likely to sell Amazon than buy it. Bhatt also says customers have always been bullish on Google. Over the past week, Robinhood users have shown the same buying patterns as they did in the week before Google's Q2 earnings. In both situations, retail investors were 1.1x more likely to buy than sell GOOG.