Twitter will increase the money it derives from sponsored tweets as part of its business objectives
Twitter files its IPO papers that show the micro-blogging service has yet to make a profit
Twitter is to file for a public listing, in one of most anticipated tech-related IPOs since Facebook
Data centre software specialist Infoblox is looking to raise $125m (£81m) when it goes public later this month
Avaya is preparing for a £610m public listing, following the recent successful outing of LinkedIn