The PC market is about to be flooded with Chromebooks that can run Android apps. Android's popularity and other factors make this a big threat to Microsoft's Windows business.
Stocks move higher on Tuesday morning as earnings winners DuPont and Alibaba outpace weaker reports from the likes of Lockheed Martin.
Stock futures are little changed on Tuesday morning as a rush of earnings reports leaves Wall Street torn on which direction to go.
Here are Tuesday's top research calls, including an upgrade for Silgan and downgrades for Apple, Aetna and DineEquity.