Twitter plans stock market listing
13 September 2013 Last updated at 01:38 BST
Twitter has announced it has filed paperwork with US regulators ahead of a planned stock market flotation.
"We've confidentially submitted an S-1 to the SEC for a planned IPO [initial public offering]," the company tweeted on its official feed.
The stock offering is the most hotly anticipated since Facebook listed its shares last year.
The BBC's Samira Hussain reports.