The exploding tech sector that puzzles Wall Street By: CNBC.com News February 12, 2015 at 11:54 AM EST Wall Street has grown quite familiar with cloud computing. Despite the hype, investors are still puzzled when it comes to valuing cloud vendors. Read More >> Related Stocks: Box Inc Cisco Systems General Electric International Business Machines Microsoft Mobileiron Inc Netflix New Relic Inc Oracle Corp SAP Ag ADR Salesforce Telstra Cp ADR Zendesk Inc