What to Watch for in Amazon, Alphabet Results

July 28 -- Gene Munster, senior research analyst at Piper Jaffray, previews second-quarter results from Amazon and Alphabet and looks at potential search competition for Google from Facebook. He speaks on "Bloomberg ‹GO›." Munster, his family and firm, do not own shares of Amazon, Alphabet, and Facebook. His firm makes a market in Amazon and Facebook and will buy and sell their securities on a principal basis.