Longtime technology analyst Mary Meeker is leaving Morgan Stanley for greener pastures at venture capital firm Kleiner Perkins Caufield & Byers . She will join the firm as a partner. Mary Meeker joined Morgan Stanley in 1991 as the Firm’s PC Software/Hardware & New Media analyst. At the investment bank, she served as a Managing Director, and led the Global Technology Research Team that covered Google, Amazon, eBay, Yahoo!, Microsoft and others. Prior to her role at the investment bank, she served as a Technology Research Analyst at Cowen and at Solomon Brothers.