Twitter announced that they filed the S-1 paperwork to begin an initial public offering of stock via a tweet (of course). The IPO looks to be set at a valuation of between $15 billion and $20 billion.


The Daily Mail reports that by comparison, Facebook's IPO valued the social network at around $100 billion.

Bloomberg reports that Goldman Sachs is expected to be the lead underwriter of the offering.



Twitter's plan to go public has long been expected, as the company has been ramping up its advertising products and working to boost ad revenue in preparation.

Twitter recently acquired MoPub, a mobile advertising company that has a $100 million annual revenue run rate, and in July, the company hired a number of people with IPO experience.