 Shares of Zendesk Inc NYSE: ZEN opened nearly 30 up on Friday after an investor group led by Permira and Hellman Friedman HF said it will buy the SaaS company for a significant premium. Zendesk shareholders to get a 35 premium The group, that also includes GIC and the Abu Dhabi Investment Authority, is ... The post Zendesk shares are up 30 on Friday: whats fuelling the stock? 