U.S. markets look set to open lower on continuing concerns about emerging markets. Google misses profit estimates but posts higher revenue as advertising sales climb 17%. Amazon misses earnings estimates and issues a forecast for current quarter sales that is below what Wall Street was expecting. A bit of a different story for Chipotle. The burrito chain beat analyst estimates with its latest earnings report and also said sales climbed 21% from the same period a year ago. Microsoft is reportedly getting closer to naming a new CEO to succeed Steve Ballmer. The internal candidate is Satya Nadella, EVP of cloud and enterprise at Microsoft. TheStreet's Ruben Ramirez reports from the Nasdaq MarketSite in New York.